intern report(erkin karahayit

8/8/2019 Intern Report(Erkin Karahayit

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METU

2009-2010 FALL

ELECTRICAL AND ELECTRONIC

ENGINEERING

EE300

SUMMER PRACTICE REPORT

Student Name : Erkin KARAHAYIT

Student ID : 1554948

SP Date : 17/08/2009 to 11/09/2009Submission Date : 21/09/2009

SP Company Name : Karel Electronics

Company Division : Communication Technology Design Group

Company Location : Bilkent/ANKARA

Related Field : Computers and Telecommunication

Student Contact Information:

Phone Number: 0537 634 6667

E-mail address: [email protected]



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TABLE OF CONTENT

1. INTRODUCTION

2. DESCRIPTION OF COMPANY

2.1. COMPANY NAME

2.2COMPANY LOCATION

2.3. ORGANIZATION

2.4. NUMBER OF PEOPLE EMPLOYED

2.5. MAIN AREA OF BUSINESS

2.6. COMPANY PROFILE

2.7. RESEARCH AND DEVELOPMENT

2.8. PRODUCTION

2.9. SALES AND MARKETING

2.10. MISSION

2.11. BRIEF HISTORY OF COMPANY

3. WORK CONDUCTED AT THE SUMMER PRACTICE LOCATION

3.1. SOLDERING3.2. DESOLDERING

3.3. DESIGNING PROCEDURE

3.3.1 CREATING DATABASE FORM

3.3.2 WRITING DATA TO DATABAS

3.3.3 ENTERING DATA WITH DATE TIME PICKER TO DATABASE

3.3.4 FILTERING

3.4. TYPES OF BARCODES

3.5. BARCODE GENERATION SOFTWARE

3.6. BARCODE SCANNER

3.7. GENERAL PICTURE OF DATABASE PROGRAM

3.8. FULL CODE OF DATABASE PROGRAM

4. CONCLUSION

5. REFERENCES



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1. INTRODUCTION

I have performed my second year Summer Practice in the research and development

center at Karel Electronics which is the leading telecommunication company of Turkey. Karel

designs all kinds of telephone systems including public switches and PBX systems withtelephone sets and other accessories. My summer practice lasted totally four weeks, started at

17.08.2009 and ended at 11.09.2009. The division at which I have performed my work is the

communications technology design department. I have performed my work under supervision

of Alper Sarıkan who is communications technology design leader of company. I decided to

do my summer practice at Karel Electronics due to two main reasons. First one is Karel is one

of the biggest telecommunication company of Turkey. The second reason is that my friend

who performed their summer practices in this company before suggested Karel to me.

The main purpose of my intern project assigned by Alper Sarıkan is to create database

program which allow users to reach and store some material information. Material

information is classified into thirteen (13) groups. Name of the subheadings of our material

information are:

1) Manufacturer Name

2) Manufacturer Number

3) Why does the user enter these materials to our database program?

4) Distributor

5) Who entered the data

6) Place

7) Quantity

8) Barcode Number

9) Date

10) Explanation of material

11) Type of material

12) Karel Reserve Number

13) Drawer Number

Barcode number has special importance among these subheadings since barcode scanner is

implemented to our database program. User can reach the properties of material easily reading

the barcode with the help of our barcode scanner and search this barcode number in our

database program using filter button. Barcode reader is used to make it easy to reach database

and find material more quickly. One of the main purposes of my project is to connect the data



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information with barcode number. In other words user can reach all the information about

material when the barcode number is entered in our database program.

Another critical subheading is Karel_Reserve_Number. It is important because all of the

materials which are using in the company have some kind of identification number called

Karel_Reserve_Number. For example connectors have Karel_Reserve_Number like

HKNK00045. ‘HKNK’ is constant for all connectors but number changes depending on

connector type. This code crucial since they are used by Karel Research and Development

engineers while designing projects.

My intern project has five parts which are:

a) Creating database program

b) Choosing suitable barcode scanner to buy

c) Choosing suitable barcode type to print

d) Choosing suitable barcode generation software to print our barcodes

e) Reading barcode and implement this barcode information to our database program

I completed this project by using Borland C++ Builder. This program provides me the two-

way visual C++ development environment with outstanding features for quickly building

database applications.

In this report, a detailed description of the things that I have done and my observations duringmy internship is included. It begins with the general description of my summer practice

company, Karel Electronics, in which main areas of business, the organizational structure of

company and profile of company are explained. Then the main part of the report including the

works related with the creating database program, choosing barcode type, choosing barcode

scanner and soldering process follows the description part of the report. Afterwards, the

conclusion part comes, consisting of the general assessment of the company, the advantages

and disadvantages of the performing the summer practice in Karel Electronics Corporation.

Also an appendix is included as a reference text.



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2. DESCRIPTION OF COMPANY

2.1. COMPANY NAME

Karel Electronics Corporation

2.2. COMPANY LOCATION

• Head OfficeAddress: Kore Şehitleri Caddesi Yzb. Kaya Aldoğan Sokak 16 Zincirlikuyu 34394 Đstanbul

Telephone: +902122883100

• Research and Development CenterAddress: Cyberpark Cyber plaza B Blok Kat 3 Bilkent 06800 Ankara

Telephone: +903122650297

• Production CenterAddress: Organize Sanayi Bölgesi Gazneliler Caddesi 10 Sincan 06935 Ankara

Telephone: +903122670244

2.3. ORGANIZATION

Karel Electronics Corporation has its headquarters in Istanbul, production premises

and the R&D Center in Ankara and offices in Đzmir, Antalya, Van and Bursa, employ 550

people with 100 engineer. Karel Research and Development center employs 79 people with58 engineers.

2.4. NUMBER OF PEOPLE EMPLOYED

It is reported that there are 110 employees, 77 of which are engineers, working at

Karel Research and Development Center.

2.5. MAIN AREA OF BUSINESS

Karel's core business is the design, development, production and marketing of all

kinds of telephone systems including public switches and PBX systems with telephone sets

and other accessories.

2.6. COMPANY PROFILE

Karel Electronics Corporation, established in 1986, is the leading manufacturer and

supplier of Telecommunication Equipment of Turkey. Karel devises all of its core products

under its own license. With its telephone systems covering the whole range from a few to



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thousands of ports, Karel has the absolute and indisputable leadership in the local market and

a strong and widening presence in world markets. Its ever-rising performance has placed

Karel among the top 25 manufacturers of telephone systems in the world, and it is the leading

manufacturer of the world for PSE (Premises Switching Equipment) shipments to Middle East

& Africa as certified by Gartner Dataquest. The strong distribution network composed of

authorized distributors, wholesalers, dealers and sales points is the driving force for the

widespread marketing activities. Karel offers optimum solutions for a wide range of

enterprises such as hotels & hospitals, banks, manufacturing plants, multi-location offices,

public offices and telecom operators worldwide. Within the context of its activities in

telecommunications, Karel collaborates with reputable companies to develop turnkey projects

for private and public companies including telecom operators in its homeland as well as

neighboring countries.

2.7. RESEARCH AND DEVELOPMENT

The activities for product and system development are implemented by the Research

and Development Center in Cyberpark, Bilkent University. Karel's competitiveness in the

long run depends on its competence to get acquainted with new technologies, integrate them

in its products and solutions combined with its potential and capability to develop new

technologies. This is the philosophy behind Karel's generous 10 % investment of turnoverevery year in research and development activities. Karel does not have any technological

dependence for the license and know-how of the products in its portfolio. As of today, Karel

Research and Development Center gives support to the design of electronic boards produced

by Aselsan and Arcelik, which are the biggest manufacturers of military equipments and

household appliances in Turkey, respectively.

2.8. PRODUCTION

Karel performs its manufacturing activities in Ayas Industrial Zone, Ankara, through

Production Planning & Control, Purchasing and Production Departments, in its plant that sits

on 20.000 m2 of area of which 10.000 m2 is closed. The manufacturing chain that lies

between suppliers and customers is supervised via the ERP system integrated to the company

network. The insertion and test machines of latest technology are employed in the production

line which is under continuous development. Automatic insertion is based on axial, radial and

SMD technologies. In-circuit testers and functional testers are used for testing/verification.

Total automated component insertion rate is 210.000 components per hour. The quality and



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reliability of the production is increased by the full automated conformal coating which is

done to protect the electronic boards from environmental influences, by heat test cabins and

vibration test devices.

2.9. SALES AND MARKETING

Globally, as per Gartner Dataquest Reports:

• Karel is one of the top 25 manufacturers of telephone exchanges in the world. • Karel is number one company in the Middle East and Africa region for PSE for the

last three years

• Karel’s market share in the region is over 23%.

Karel is leader of Turkish PABX market with:

• 460.000 PABX unit and 5.5 million total PABX lines installed.

Local Distribution Channels

Karel’s domestic sales organization consists of more than 300 authorized dealers and more

than 500 sales outlets, which are coordinated through Karel offices in Đstanbul, Ankara, Izmir,

Antalya and Van. Authorized Karel dealers offer sales and after sales services throughout

Turkey. The dealers are closely monitored by Karel and are regularly updated through

technical or other training programmers.

Worldwide Partnerships

Karel offers user-friendly and internationally approved telecommunication solutions to end-

users of more than 20 countries in Europe, Africa and Asia. Karel focuses on international

marketing by exporting over 30% of its overall production, and seeks to implement a

distribution network similar to the domestic one in the international markets. Karel

collaborates with her distributors and gives technical support for Karel products, worldwide.

In addition to export activities, Karel collaborates with well known vendors of

telecommunications equipments, and consequently, has introduced fax machines, GSM

telephones, CT-1, DECT handsets and many other well sought products into the domestic

market.

2.10. MISSION

Karel’s mission is to offer products and solutions based on:

• Powerful engineering force furnished with the best equipment available.

• A quality assurance system under continuous improvement.

• Monitoring customer requirements and market developments.



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• Satisfying best(Price/Performance) ratio while keeping the quality maximum.

2.10. BRIEF HISTORY OF COMPANY

1986 -Karel was established. MS48 model telephone exchange system was started to

produce.

1988 -MS26 exchange system was presented to market.

1989 -The first tiny printer of the market was produced.

1990 -Exporting was started.

1991 -Exporting company, called Telekom A.S. was established.

1993 -Production and R&D center was established in Ankara - Sincan OSB.

1994 -ROBOP (Robot operator) was produced.

1995 -Karel joined with Defne to telephone market. MS14 exchange system was produced.

1996 -Pattern factor was established in Đstanbul.

-MS128 exchange system was produced.

-Headquarter was opened in Đzmir.

1997 -Headquarter was opened in Antalya.

-Design and production for Arçelik was started.

1998 -After reorganization and being corporation, ISO 9001 certificate was taken.

1999 -MS224 telephone exchange was presented to market.

-With DS200 numerical telephone exchange became finalist of TÜBĐTAK, TTGV

and TÜSĐAD technology awards in great company category.

-With DT04 DECT system became finalist of TESĐD electronics innovativeness-

creativeness awards in great company category.

2000 -Globally, as per Gartner Dataquest Reported, Karel was registered one of the top 25

manufacturers of telephone exchanges in the world and Karel was number one



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company in the Middle East & Africa region for PSE for the previous three years.

2001 -Headquarter was opened in Van.

2003 -GT10-GT20 GSM router was presented to market.

2004 -Karel’s founders take place among the finalist at the Turkey election of “year

of entrepreneur in the world” which was arranged by Ernst & Young.

2005 -R&D was moved to Cyber plaza in Bilkent.

-IP PBX system with DS10 became finalist of TÜBĐTAK, TTGV and TÜSĐAD

Technology Greatest awards.

-MS26C telephone exchange was presented to market.



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3. WORK CONDUCTED AT SUMMER PRACTICE LOCATION

3.1.SOLDERING

My first experience during my summer practice is to learn soldering at Karel

Production Center. Soldering is a process in electronics where two or more items are joined

together by melting and flowing a filler metal into the point, the filler metal having a

relatively low melting point. In other words soldering is a process to join metallic surfaces

when applying solder and flux. Flux is a chemical cleaner which prepares the hot surfaces for

the molten solder. Flux only cleans oxides of the surfaces to be soldered, but does not remove

dirt, oils and silicone. Hand soldering is performed with a soldering iron at Karel Electronics.

It is also necessary to select a suitable solder iron tip. All soldered joints require the same

elements of cleaning of the metal parts to be joined, fitting up the joints, heating the parts,applying the filter. Depending on the nature of flux material used cleaning of joints may be

required after they have cooled. In addition, when choosing a soldering tip, it is suggested to

select the largest possible diameter and shortest reach. For attachment of electronic

components to a PCB, proper selection and use of flux helps prevent oxidation during

soldering. The soldering iron must be clean and pre-timed with solder. After inserting a

through-hole mounted component, the excess head is cut off. Operator training and

experience provide better soldering results. It is also critical to understand soldercharacteristics, correct techniques and how a soldering iron works. Picture 2 is a good

illustration for soldering process.

Picture1 Picture2



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3.2.DESOLDERING

In electronics, desoldering is a process to remove solder and components from printed

circuit boards. Desoldering is not as easy as soldering since printed circuit boards, especially

mother boards, have several layers . While trying to remove a component, it is possible tobreak the connection between the hole and the internal board layers. The main problem is that

printed circuit boards have several layers. We can see only two layers called solder layer and

component layer but there are other layers inside the printed circuit board. The holes where

the components are soldered to are metalized and serve not only to hold the component, but

also to make the electrical connection between the two visible PCB layers and the internal

PCB layers, which are not visible. If you make a wrong move while trying to remove a

component, you may break the connection between the hole and the internal board layers,

destroying your board.

3.3.DESIGNING PROCEDURE

Before starting to create my database program, it is necessary to study some basic C++

tutorials because there are some big difference like classes between C and C++. For that

reason the first thing that I have done is to read tutorials about Borland C++. This work is also

assigned me by Alper Sarıkan. During my summer project it is obvious that I will use these

two features of C++ Builder. Then I am ready to create our database program which is

available to store material information.

In Borland C++ Builder, the code should be written by hand. To make these

assignments occur, you must enter them in an event such as TbuttonOnClick event or edit

controls’ OnEnter event. Borland C++ Builder contains three (3) parts. The first one is ‘object

inspector’. It can be used to display and edit component properties and event handler

functions. The second one is ‘form window’ which contains buttons, icons, dialog boxes,

etc... It can be considered as visible part of the program for the user. And the last one is‘source page’ where the code is written. It is convenient to understand how the program

works, each control tool in the ‘form window’ and their task should be understood. Moreover

these buttons control static texts. I will explain my codes under the related buttons or edit

box’s heading.



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3.3.1 CREATING DATABASE FORM

Delphi database applications get their data through the Borland Database Engine

(BDE). The database must be defined before the application developed. Therefore, the first

thing that I have done is to create table which store name, type and size of the field. This tableis created with the help of ‘Database Desktop’ software. At the end of this process, a table

containing 13 fields is created. In a relational database, the data is organized into tables. Each

row of table contains information about a particular item, called record. Each column contains

one piece of information that makes up record, called field. I determined type and size of each

field in my table. For example type of ‘Barcode’ is chosen as alpha and its size is chosen as

25 characters. The versions of Paradox are used to create tables. These tables have all the

necessary characteristics and requirements of a database table. It will be better to see the

picture (picture 3-4-5) of process while designing our table which contains our fields and their

properties.

Picture 3



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Picture 4

Picture 5



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After completing all of these processes, ‘karel.db’ is ready to use as a datasource in our

program. All the changes we made our database will directly upload ‘karel.db’. Next step is to

connect karel.db to TTable and TDataSource. Method of connection of TTable, TDataSource

and ‘karel.db’ is explained in detail below part.

3.3.2 WRITING DATA TO DATABASE

Before starting to explain how I connect the components such as TTable and TDataSource to

each other, it will be better to explain them.

TField:

For each field, Borland creates a corresponding TField component. TField components are

important because they provide a direct link to a database column. TFields contain columns’

data type, current value and its format. TField components are invisible components that

provide access to field values and display attributes. By default TField components are

dynamically generated at design time when Active = True of TTable. TField component and

the value I assigned must be compatible; otherwise, my program will give an error. Therefore

most of field type was chosen as alpha.

TDataSource:

It acts as a conduit between a data access component between TTable, TQuery componentsand data aware components such as TDBGrid.

TTable:

It retrieves data from a database table via the borland database engine(BDE) and supplies it to

one or more data aware components through a TDataSource component. TTable sends data

received from a component to database via the BDE. In other words TTable component

establishes a connection to table in database.

TDB Navigator:

The TDB Navigator component enables me to browse a dataset record by record. The

navigator provides buttons for first record, next record, previous record, last record, insert

record, delete record, edit record, cancel edits, post edits, and refresh respectively. (Shown in

picture 6) This button is especially used while entering, deleting and updating data to our

database, ‘karel.db’.

Picture 6



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TDBGrid:

The DBGrid component displays a dataset in tabular or spreadsheet format.

Data Aware Controls:

TDBGrid and TDBEdit are classified in this group. They provide display of data on a form.

TDBGrid allows me look at, enter, change and delete data. These two components provide the

visible user interface of data but they are unaware of the structure of the table from which

they receive data.

Procedure:

To connect borland database engine to our program, intermediary object should be

used to perform the link from my program to the table of my database. The database,

‘karel.db’ that I need to connect is called our source. Database form wizard is used whilecreating database form. The advantage of this wizard is that I do not have to place any

database components to form. This wizard automatically places the necessary components

and a few properties of these components are changed with the help of object inspector

window. The Database Form Wizard enables me to create both simple forms and

master/detail forms. It enables me to choose whether my dataset will be a TTable or a

TQuery. The wizard enables me to select a database table and to select the fields from that

table that you want displayed on the form.Step 1:

The first step gives me options for selecting either a single table form or a master/detail form

as seen in picture 7. TTable components are used in our program since it is good enough for

local databases.

Picture 7



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Step 2:

In this step I have to choose master data source, ‘karel.db’, and directory as seen in picture 8.

Picture 8

Step 3:

In this step fields of master table that I want to display in my form is selected as seen in

picture 9. All the fields are selected in my form by pushing ‘button >>’.

Picture 9



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Step 4:

Next screen presents options for displaying the selected fields on the form (Picture 10). Third

option: Grid is selected in our project.

Picture 10

After completing all of these steps, our form including TDB Navigator, TDBGrid,

TTable and TDataSource is automatically created. Next step is to connect these components

to each other. I firstly changed some properties of TTable using object inspector window. The

directory, ‘samplebox’ where our database resides in the DataBaseName property is entered.

Secondly TableName is changed as ‘karel.db’ since this change connects TTable to our

database. Finally TDataSource component is connected to interactive data control components

and TTable data access objects by changing the property of TDataSource as DataSet=Table1.

Now TTable, TDataSource, TDBGrid and karel.db are connected to each other. Then our

fields should be added to our DBGrid. As shown in picture 1, all of our fields are added as a

column to our database table using edit command of grid. That means when the program iscompiled, our system is ready to be entered some data.

Picture 11



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3.3.3 ENTERING DATA WITH DATE TIME PICKER TO DATABASE

While creating our table in ‘Database Desktop’ manager, the Islenme_Tarihi field is designed

as a type of date field. Because of this reason we can only enter the dates into our database in

the form of 01.01.2009. However, entering dates in this way can be a bit challenging for userssince user cannot know the exact form of date and if user tries to enter date in the different

format like 01/01/2009 our program will give an error. In order to prevent this problem, I

decided to place a drop down calendar into a cell of a DBGrid. This application creates

visually more attractive user interfaces for editing date fields, Islenme_Tarihi, inside a

DBGrid.(Picture 12)

Picture 12

Now it is time to explain how our calendar is matched to our fields. Firstly I placed a Button

and a DateTimePicker to our form. Secondly properties of DateTimePicker are changed with

the help of object inspector. These changes are DataField=Islenme_Tarihi and

DataSource=DataSource1. The property of button: visible = false is changed like this since

this button has no function in our program and it should not seen by program users. After

completing these processes, datetimepicker is directly connected to the Islenme_Tarihi field.

Then I implemented code shown in Table 1 to button1click.

void __fastcall TForm2::Button1Click(TObject *Sender)

{

char sdate1[20];

Button1->Default=False;

wsprintf(sdate1, "SDATE>='%s'", DBDateTimePicker1->Date.DateString());

}

Table 1



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After implementing this code, calendar is shown when the user clicks on the Islenme_Tarihi

field.But we still have a problem. I need to allign datetimepicker to each cell of

Islenme_Tarihi column. In order to prevent this problem, code shown in table 2 is added to

our program.

void __fastcall TForm2::DBGrid1DrawColumnCell(TObject *Sender,

const TRect &Rect, int DataCol, TColumn *Column,

TGridDrawState State)

{

if ( State.Contains(gdFocused) )

{

if (Column->Field->FullName == "ISLENME_TARIHI")

{

{

DBDateTimePicker1->Left = Rect.Left + DBGrid1->Left + 1;

DBDateTimePicker1->Top = Rect.Top + DBGrid1->Top + 1;

DBDateTimePicker1->Width = Rect.Right - Rect.Left + 2;

DBDateTimePicker1->Height = Rect.Bottom - Rect.Top + 2;

DBDateTimePicker1->Visible = True;

}

}

}

}

Table 2

After adding these two parts of code to our program, we still have a problem. Datetimepicker

is not closed after entering date to our database. In order to solve this problem, code shown in

table 3 is added to our program.

void __fastcall TForm2::DBGrid1ColExit(TObject *Sender)

{

if ( DBGrid1->SelectedField->FieldName == "ISLENME_TARIHI" ) {

DBDateTimePicker1->Visible = False;

}

}

Table 3



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3.3.4 FILTERING

One of the main idea of creating this program is to find the necessary electrical

components easily. For that reason, it is not enough to create database and store some

information about materials. User can easily reach properties of the necessary componentsusing filter button. So I placed three filter buttons which are Barcode, Karel_Reserve_Number

and Yeri are placed on visual part of our program. These buttons are connected to combo

boxes. When the user enters data, which is wanted to search in our database, in combo box

and clicks on to buttons, our program starts to search this keyword in the related field. Code

shown in table 4 is added to our program in order to filter data based on barcode number.

//Önyüzde bulunan 'BARCODE' Button'un arama komutu------------------------------


{

if(ComboBox2->Text != "")

{

if(strlen(ComboBox2->Text.c_str())<30)

{

if(DBGrid1->DataSource ==DataSource1)

{

wsprintf(sFilter, "BARCODE = '%s*'", ComboBox2->Text);

tFilter = sFilter;

Table1->Filter = tFilter;

Table1->Filtered = true;

Table1->Last();

}

if(ComboBox2->Items->Capacity == 0)

ComboBox2->Items->Add(ComboBox2->Text);



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int i=0;

bool match=false;

while(i< ComboBox2->Items->Capacity)

{

if(ComboBox2->Text == ComboBox2->Items->Strings[i])

{

match=true;

break; }

i++;

}

if(!match)


}

else

{

ComboBox2->Text = "";

Table1->Filter = "";


}

}

else

{




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Table1->Last();

}

}

//---------------------------------------------------------------------------

Table 5

The same procedure is applied to the other two filtering button. However, after testing our

program this filter does not seem sufficient to me and I decided to create another filter button

including date filter and keyword filter. For that purpose I placed ‘Gelismis_Arama’ button onmy form and open new form called form 3 as shown in picture 13.

Picture 13

In this form when you enter the ‘Okey’ button on form 3, searching process in databaseautomatically starts and when you enter the cancel button, form 3 closes and user return to

main form. To activate filtering user have to use combo boxes and click them firstly. Filtering

with ‘Islenme_Tarihi’ and ‘Keyword’ have completely different codes. In table 6 and table 7,

these codes are given respectively. With help of this detailed search button, user can easily

reach material easily and especially using keyword button makes the life easier. During all the

filtering processes, filtering options of table are changed in order to make the search

caseinsensitive. That is foCaseSensitive = true.



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if(CheckBox4->Checked == true)

{

if( Form2->Table1->Filter == "" )

{

cFilter = AnsiString("ISLENME_TARIHI >= '") + DateTimePicker1->Date.DateString()

+ "'";

cFilter = cFilter + " and " + AnsiString("ISLENME_TARIHI <= '") + DateTimePicker2-

>Date.DateString() + "'";

Form2->Table1->Filter = cFilter;

Form2->Table1->Filtered = true;

Form2->Table1->Last();

} else

{

cFilter = AnsiString("ISLENME_TARIHI >= '") + DateTimePicker1->Date.DateString()

+ "'";

cFilter = cFilter + " and " + AnsiString("ISLENME_TARIHI <= '") + DateTimePicker2-


Form2->Table1->Filter = Form2->Table1->Filter + " and " + cFilter;



} }

Table 6

void __fastcall TForm3::BitBtn1Click(TObject *Sender)

{



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char temp2[5]={'"','%',0,0,0};

char temp3[5]={'%','"',')',0,0};

char sdate1[20],sdate2[20];

char temp[1024]="";


{

strcpy(temp,"SELECT *FROM karel.db WHERE");

addExpression(temp, "YERI", ComboBox3->Text.c_str());

addOperator(temp,"OR");

addExpression(temp, "MALZEMENIN_TANIMI", ComboBox3->Text.c_str());addOperator(temp,"OR");

addExpression(temp, "URETICI_ADI", ComboBox3->Text.c_str());


addExpression(temp, "BARCODE", ComboBox3->Text.c_str());


addExpression(temp, "ADET", ComboBox3->Text.c_str());


addExpression(temp, "CEKMECE_NO", ComboBox3->Text.c_str());


addExpression(temp, "MALZEMENIN_TIPI", ComboBox3->Text.c_str());


addExpression(temp, "KAREL_STOK_NO", ComboBox3->Text.c_str());


addExpression(temp, "URETICI_NUMARASI", ComboBox3->Text.c_str());


addExpression(temp, "NE_AMACLA_ISLENDI", ComboBox3->Text.c_str());


addExpression(temp, "KIM_ISLEDI", ComboBox3->Text.c_str());




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addExpression(temp, "HANGI_PROJEDE_KULLANILDI", ComboBox3->Text.c_str());


addExpression(temp, "DISTRIBUTOR", ComboBox3->Text.c_str());

Form2->DataSource1->DataSet->Active = false;

Form2->Query2->SQL->Clear();

Form2->Query2->SQL->Add(temp);

Form2->Query2->Filtered = true;

Form2->Query2->FilterOptions.Contains (foCaseInsensitive);

Form2->DataSource1->DataSet = Form2->Query2;

Form2->DataSource1->DataSet->Active = true;

}

Table 7



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3.4.TYPES OF BARCODES

After creating our database program which stores material information, I decided to choose

which type of barcode is suitable for our project. Barcodes are machine-readable

representation of information. Different bar and space characters are used to represent

different characters. Set of these patterns are grouped together to form a “Symbology”. In the

sale and production management, the use of barcodes provides the detailed accurate

information on key aspects of business and allows quick decisions to be made with more

confiedence. Barcodes are useful in receiving items. That’s why we are sticking barcodes to

our electronıc components at our project. There are different barcode symbology each having

special characteristics and features. The symbologies are designed to meet the needs of

specific application in industry. While choosing the proper barcode type, there are two maincriteria. The first one is that our barcode must be suitable with our laser printer. That means I

cannot choose barcodes which are diffucult to print with ordinary printers. Most of barcodes

need high quality barcode printers like Zebra TLP3842. The second criteria while choosing

barcode type is that it should be applicable most of the electric components like printed circuit

board(PCB). At Karel Electronics, most of the PCBs have specific barcode number,Code 93,

and one of our puposes is to store this PCBs information at our database. So I decided to use

Code 93 type barcodes in our project. Code93 barcode standart is one of the popular barcodesymbology which is useful for encoding the electronic components. Code 93 provides added

security as compared to other available barcode symbology. Code 93 barcode was designed to

provide barcode with both higher density and security. Detail information about brcode types

are given below part.

Code 93

Code 93 is capable of encoding the exact same characters as the normal Code 39 barcode,

uppercase letters A-Z, digits 0-9 and special characters such as SPACE, minus (-), period (.),dollar sign ($), slash (/), percent (%) and plus (+). The only difference is that this symbol is

more compact.



27

Code 39

Capable of encoding uppercase letters A-Z, digits 0-9 and special characters such as SPACE,

minus (-), period (.), dollar sign ($), slash (/), percent (%) and plus (+).This barcode can be of

Any length, but the more characters encoded, the larger the symbol will be.

Code 39 (Full ASCII)

This extension to Code 39 allows the encoding of additional characters that aren’t part of the

Code 39 character set, such as lowercase letters and additional symbols. Encoding of the Full

ASCII character set is possible by encoding one of four Code 39 characters (+ $ % /) followedby one of the 26 alphabetic Code 39 characters.

Code 39 (HIBC)

Code 39 (HIBC) is an alphanumeric symbol that is exactly the same as the normal Code 39,

but requires the special character (+) plus as the start character for each symbol.

CodaBar

Capable of encoding digits 0-9, six special characters, (-) dash, (:) colon, (.) period, ($) dollar

sign, (/) slash and (+) plus and the start/stop characters A, B, C, and D.

Code 128

This is an alphanumeric symbol capable of encoding digits 0-9, upper and lowercase letters

A-Z and all standard ASCII symbols. Code 128 is variable length, the more characters, the

larger the symbol will be.

UCC/EAN 128

This symbol is capable of encoding the same characters as a normal Code 128 barcode, digits

0-9, upper and lowercase letters A-Z and all standard ASCII symbols. However, UCC/EAN



28

128 formats the data in a different way so that the type of information encoded can be

identified. This is done with application identifiers; these 2, 3, or 4 digit numbers are

enclosed in parenthesis and identify the type of data which follows.

INTERLEAVED 2 OF 5

This is a numeric only barcode that must contain an even number of digits.

PostNET

This numeric only symbol is capable of encoding digits 0-9 and can be printed as a 5-digit

PostNET barcode, a 9-digit Zip+4 PostNET barcode, or a 9-digit DPBC PostNET barcode.

UPC-A

This fixed length, numeric only symbol must contain 12 digits.

UPC-E

This fixed length, numeric only symbol is a compressed version of the UPC-A. All barcodes

must contain 6 digits and because the UPC-E is used for the number system zero, all symbols

must begin with a zero.

EAN-8

This fixed length, numeric only symbol is a compressed version of the UPC-A. All barcodes

must contain 6 digits and because the UPC-E is used for the number system zero, all symbolsmust begin with a zero.



29

EAN-13

This fixed length, numeric only symbol is similar to the UPC-A, but encodes 13 characters

instead of 12.

MSI/Plessy

This variant of the Plessey barcode is capable of encoding the digits 0-9 and is variable

length.

Bookland

Bookland encodes an ISBN number in an EAN-13 format. It is numeric only and always

begins with 978, which is the Bookland EAN prefix (this generator will automatically add this

prefix to your ISBN). The additional 10 digits are the ISBN number.

3.5.BARCODE GENERATION SOFTWARE

After making deep research in the internet, I decided to use ‘Universal Barcode Generator’

program. Since we can adjust the barcode value, barcode width, barcode height and barcode

format with help of this program. Moreover price of licence is 69$ which is convenient to our

budget.



30

Figure 1

3.6. BARCODE SCANNER

After choosing our barcode type and barcode generator software, next step is to determine

what kind of barcode scanner is suitable to our system. My advisor, Alper Sarıkan, wanted me

to make search about barcode scanner. After making some research 3 barcode scanners seem

perfect to our system. Name of these barcode scanners are:

Name: Price:

1) Intermec SR60 Industrial Barcode Scanner 900$

2) Motorola LS3408 Rugged Barcode Scanner 500$

3) Motorola LS2208 Symbol Barcode Scanner 200$



31

When I examined these products, the first thing I observed is huge gap between prices. Our

system is not too complicated. There are three main things that our system needs from

barcode scanner. The first one is that our barcode scanner should behave like keyboard. There

should not be any difference between entering barcode number from keyboard or reading

barcode with barcode scanner. Our database program is designed to enter barcode number

with barcode scanner like keyboard. In other words when we plug in the scanner, the

operating system will recognize it as a keyboard or human input device. It is designed like this

to make the program easier. The second one is that our barcode scanner should be capable of

decoding and transmitting Code 93 barcode type since I choose Code 93 barcode type to print.

And third one is best ratio of performance/ price. After making deep research and reading

features of these barcode scanners. My advisors, Alper Sarıkan, decided to use Motorola

Symbol LS2208 while storing barcode numbers into our database.

Advantages of using Motorola Symbol LS2208

a) Maximum productivity

b) Working range is 43cm( improves user productivity)

c) Fast performance at 100 scans per second( increases user productivity)

d) Affordable features

e) Getting started with the Symbol LS2208 is fast and simple 123scan setup utility

f) Easy-to-use tool reduces startup time and costs wherever the scanner is used

Symbol LS2208 Barcode Scanner



32

PHYSICAL CHARACTERISTICS OF LS2208

Color Twilight black, Cash register white

Corded Yes

Dimensions6 in. H x 2.5 in. W x 3.34 in. D 15.2 cm H x6.3 cm W x 8.4 cm

Handheld Yes

Power sourceHost power or external power supply; dependson host type

Voltage and current5 volts +/- 10% at 130 mA typical, 175 mA

max

Weight 5.15 oz./146 gm

PERFORMANCE CHARACTERISTICS OF LS2208

Decode capability 1D

Depth of fieldFrom contact to 17 in./43 cm on 100%U.P.C./EAN symbols

Interfaces supportedIBM, Keyboard wedge, RS-232, Synapse,

USB, Wand

Minimum resolution 20% minimum reflective difference

Pitch 2 +/-65 degrees

Roll (Tilt) 1 +/-30 degrees

Scan pattern Single line

Skew (Yaw) 3 +/-60 degrees

Technology Laser

USER ENVIRONMENT

Ambient light immunityImmune to direct exposure of normal officeand factory lighting conditions, as well asdirect exposure to sunlight

Drop specificationsUnit functions normally after repeated 5 ft./1.5m drops to concrete



33

3.8. GENERAL PICTURE OF DATABASE PROGRAM

Picture 14



34

Picture 15

3.8. FULL CODE OF DATABASE PROGRAM

HEADER FILE(Unit2.h)

//----------------------------------------------------------------------------

#ifndef Unit2H

#define Unit2H

//----------------------------------------------------------------------------

#include <SysUtils.hpp>

#include <Windows.hpp>

#include <Messages.hpp>

#include <Classes.hpp>

#include <Graphics.hpp>

#include <Controls.hpp>

#include <StdCtrls.hpp>

#include <Forms.hpp>

#include <DBCtrls.hpp>

#include <DB.hpp>#include <DBGrids.hpp>

#include <Db.hpp>

#include <DBTables.hpp>

#include <ExtCtrls.hpp>

#include <Grids.hpp>

#include <Menus.hpp>

#include <Mask.hpp>#include <ComCtrls.hpp>

#include <ToolWin.hpp>

#include "DBDateTimePicker.hpp"

#include <Buttons.hpp>

#include <Dialogs.hpp>

//----------------------------------------------------------------------------

class TForm2 : public TForm

{



35

__published:

TDBGrid *DBGrid1;

TDBNavigator *DBNavigator;

TPanel *Panel1;

TDataSource *DataSource1;

TPanel *Panel2;

TTable *Table1;

TLabel *Label1;

TPanel *Panel3;

TButton *Button2;

TComboBox *ComboBox1;

TQuery *Query1;

TDBGrid *DBGrid2;



TButton *Button3;

TButton *GELISMIS_ARAMA;

TButton *Button4;

TButton *Button1;

TDBDateTimePicker *DBDateTimePicker1;

TLabel *Label2;

TDataSource *DataSource2;

TStringField *Table1URETICI_NUMARASI;

TStringField *Table1URETICI_ADI;

TStringField *Table1NE_AMACLA_ISLENDI;

TStringField *Table1HANGI_PROJEDE_KULLANILDI;

TStringField *Table1DISTRIBUTOR;

TStringField *Table1KIM_ISLEDI;

TStringField *Table1YERI;

TStringField *Table1BARCODE;

TStringField *Table1ADET;

TDateField *Table1ISLENME_TARIHI;

TStringField *Table1MALZEMENIN_TANIMI;



36

TStringField *Table1MALZEMENIN_TIPI;

TStringField *Table1KAREL_STOK_NO;

TStringField *Table1CEKMECE_NO;

TStringField *Query1URETICI_NUMARASI;

TStringField *Query1URETICI_ADI;

TStringField *Query1NE_AMACLA_ISLENDI;

TStringField *Query1HANGI_PROJEDE_KULLANILDI;

TStringField *Query1DISTRIBUTOR;

TStringField *Query1KIM_ISLEDI;

TStringField *Query1YERI;

TStringField *Query1BARCODE;

TStringField *Query1ADET;

TDateField *Query1ISLENME_TARIHI;

TStringField *Query1MALZEMENIN_TANIMI;

TStringField *Query1MALZEMENIN_TIPI;

TStringField *Query1KAREL_STOK_NO;

TStringField *Query1CEKMECE_NO;

TQuery *Query2;

void __fastcall FormCreate(TObject *Sender);

void __fastcall Button2Click(TObject *Sender);




void __fastcall DBGrid1DrawColumnCell(TObject *Sender,


TGridDrawState State);

void __fastcall DBGrid1ColExit(TObject *Sender);

void __fastcall GELISMIS_ARAMAClick(TObject *Sender);

void __fastcall ToolButton7Click(TObject *Sender);

private:

// private declarations

public:



37

// public declarations

__fastcall TForm2(TComponent *Owner);

};

//----------------------------------------------------------------------------

extern TForm2 *Form2;

//----------------------------------------------------------------------------

#endif

SOURCE FILE(Unit2.cpp)

//----------------------------------------------------------------------------

#include <vcl.h>

#pragma hdrstop

#include <stdlib.h>

#include <stdio.h>

#include <string.h>

#include "Unit2.h"

#include "Unit3.h"

//----------------------------------------------------------------------------

#pragma link "DBDateTimePicker"

#pragma resource "*.dfm"

TForm2 *Form2;

AnsiString zFilter;

AnsiString tFilter;

AnsiString temp;

char sFilter[30];

//----------------------------------------------------------------------------

__fastcall TForm2::TForm2(TComponent *Owner)

: TForm(Owner)

{




38

}

//----------------------------------------------------------------------------

void __fastcall TForm2::FormCreate(TObject *Sender)

{

Table1->Open();

}

//----------------------------------------------------------------------------

//Takvimi Field ile eşleştiriyor-----------------------------------------------


{

char sdate1[20];

Button1->Default=False;

wsprintf(sdate1, "SDATE>='%s'", DBDateTimePicker1->Date.DateString());

}

//-----------------------------------------------------------------------------

void __fastcall TForm2::DBGrid1DrawColumnCell(TObject *Sender,


TGridDrawState State)

{

if ( State.Contains(gdFocused) )

{

if (Column->Field->FullName == "ISLENME_TARIHI")

{

{

DBDateTimePicker1->Left = Rect.Left + DBGrid1->Left + 1;

DBDateTimePicker1->Top = Rect.Top + DBGrid1->Top + 1;

DBDateTimePicker1->Width = Rect.Right - Rect.Left + 2;

DBDateTimePicker1->Height = Rect.Bottom - Rect.Top + 2;

DBDateTimePicker1->Visible = True;



39

}

}

}

}

//---------------------------------------------------------------------------

void __fastcall TForm2::DBGrid1ColExit(TObject *Sender)

{

if ( DBGrid1->SelectedField->FieldName == "ISLENME_TARIHI" ) {


}

}

//---------------------------------------------------------------------------

void __fastcall TForm2::GELISMIS_ARAMAClick(TObject *Sender)

{

Form3->Show();

}

//---------------------------------------------------------------------------

//Önyüzde bulunan 'YERI' Button'un arama komutu---------------------------------


{


{


{


{

wsprintf(sFilter, "KAREL_STOK_NO = '%s*'", ComboBox1->Text);

tFilter = sFilter;



40



Table1->Last();

}



int i=0;

bool match=false;


{


{

match=true;

break;

}

i++;

}

if(!match)


}

else

{




}

}

else

{



Table1->Last();



41

}

}

//---------------------------------------------------------------------------

//Önyüzde bulunan 'BARCODE' Button'un arama komutu------------------------------


{


{


{


{

wsprintf(sFilter, "BARCODE = '%s*'", ComboBox2->Text);

tFilter = sFilter;



Table1->Last();

}



int i=0;

bool match=false;


{


{

match=true;

break;

}

i++;

}



42

if(!match)


}

else

{




}

}

else

{



Table1->Last();

}

}

//---------------------------------------------------------------------------

//Önyüzde bulunan 'MALZEMENIN_TANIMI' Button'un arama komutu--------------------


{


{


{


{

wsprintf(sFilter, "MALZEMENIN_TANIMI = '%s*'", ComboBox3->Text);

tFilter = sFilter;




43


Table1->Last();

}



int i=0;

bool match=false;


{


{

match=true;

break;

}

i++;

}

if(!match)


}

else

{




}

}

else

{



Table1->Last();

}



44

}

void __fastcall TForm2::ToolButton7Click(TObject *Sender)

{

Close();

}

//---------------------------------------------------------------------------

DBDateTimePicker.hpp

// Borland C++ Builder // Copyright (c) 1995, 1999 by Borland International

// All rights reserved

// (DO NOT EDIT: machine generated header) 'DBDateTimePicker.pas' rev: 5.00

#ifndef DBDateTimePickerHPP

#define DBDateTimePickerHPP

#pragma delphiheader begin

#pragma option push -w-

#pragma option push -Vx

#include <Db.hpp> // Pascal unit

#include <DBCtrls.hpp> // Pascal unit

#include <ComCtrls.hpp> // Pascal unit

#include <Dialogs.hpp> // Pascal unit

#include <Forms.hpp> // Pascal unit

#include <Controls.hpp> // Pascal unit

#include <Graphics.hpp> // Pascal unit

#include <Classes.hpp> // Pascal unit

#include <SysUtils.hpp> // Pascal unit

#include <Messages.hpp> // Pascal unit

#include <Windows.hpp> // Pascal unit



45

#include <SysInit.hpp> // Pascal unit

#include <System.hpp> // Pascal unit

//-- user supplied -----------------------------------------------------------

namespace Dbdatetimepicker

{

//-- type declarations -------------------------------------------------------

class DELPHICLASS TDBDateTimePicker;

class PASCALIMPLEMENTATION TDBDateTimePicker : public

Comctrls::TDateTimePicker

{

typedef Comctrls::TDateTimePicker inherited;

private:

Dbctrls::TFieldDataLink* FDataLink;

void __fastcall dataChange(System::TObject* Sender);

void __fastcall updateData(System::TObject* Sender);

void __fastcall setDataSource(Db::TDataSource* Value);

Db::TDataSource* __fastcall getDataSource(void);

void __fastcall setDataField(const AnsiString value);

AnsiString __fastcall getDataField();

Db::TField* __fastcall getField(void);

HIDESBASE MESSAGE void __fastcall CMEnter(Messages::TWMNoParams

&Message);

HIDESBASE MESSAGE void __fastcall CMExit(Messages::TWMNoParams

&Message);

public:

__fastcall virtual TDBDateTimePicker(Classes::TComponent* AOwner);

__fastcall virtual ~TDBDateTimePicker(void);

DYNAMIC void __fastcall Change(void);

__property Db::TField* Field = {read=getField};



46

__published:

__property AnsiString DataField = {read=getDataField, write=setDataField};

__property Db::TDataSource* DataSource = {read=getDataSource,

write=setDataSource};

public:

#pragma option push -w-inl

/* TWinControl.CreateParented */ inline __fastcall TDBDateTimePicker(HWND

ParentWindow) : Comctrls::TDateTimePicker(

ParentWindow) { }

#pragma option pop

};

//-- var, const, procedure ---------------------------------------------------

extern PACKAGE void __fastcall Register(void);

} /* namespace Dbdatetimepicker */

#if !defined(NO_IMPLICIT_NAMESPACE_USE)

using namespace Dbdatetimepicker;

#endif

#pragma option pop // -w-

#pragma option pop // -Vx

#pragma delphiheader end.

//-- end unit ----------------------------------------------------------------

#endif // DBDateTimePicker

HEADER FILE(Unit3.h)

//---------------------------------------------------------------------------

#ifndef Unit3H



47

#define Unit3H

//---------------------------------------------------------------------------

#include <Classes.hpp>

#include <Controls.hpp>

#include <StdCtrls.hpp>

#include <Forms.hpp>

#include <Buttons.hpp>

#include <ComCtrls.hpp>

#include <Db.hpp>

#include <DBTables.hpp>

#include <DBGrids.hpp>

#include <Grids.hpp>

//---------------------------------------------------------------------------

class TForm3 : public TForm

{

__published: // IDE-managed Components

TCheckBox *CheckBox2;



TBitBtn *BitBtn1;

TDateTimePicker *DateTimePicker1;

TDateTimePicker *DateTimePicker2;

TBitBtn *BitBtn2;





TLabel *Label1;


void __fastcall BitBtn1Click(TObject *Sender);

void __fastcall BitBtn2Click(TObject *Sender);

private: // User declarations



48

public: // User declarations

__fastcall TForm3(TComponent* Owner);

};

//---------------------------------------------------------------------------

extern PACKAGE TForm3 *Form3;

//---------------------------------------------------------------------------

#endif

SOURCE FILE(Unit3.cpp)

//---------------------------------------------------------------------------

#include <vcl.h>

#pragma hdrstop

#include "Unit2.h"

#include "stdio.h"

#include "Unit3.h"

//---------------------------------------------------------------------------

#pragma package(smart_init)

#pragma resource "*.dfm"

TForm3 *Form3;

AnsiString aFilter;

AnsiString bFilter;

AnsiString cFilter;

char mFilter[30];

void addExpression(char *dest, char *dbCol, char *exp);

void addOperator(char *dest, char *opr);

//---------------------------------------------------------------------------

__fastcall TForm3::TForm3(TComponent* Owner)

: TForm(Owner)

{

}

//Gelismis arama motoru acan komut-------------------------------------------



49


{

char temp2[5]={'"','%',0,0,0};

char temp3[5]={'%','"',')',0,0};

char sdate1[20],sdate2[20];

char temp[512]="";


{

strcpy(temp,"SELECT *FROM karel.db WHERE");

addExpression(temp, "YERI", ComboBox3->Text.c_str());


addExpression(temp, "MALZEMENIN_TANIMI", ComboBox3->Text.c_str());


addExpression(temp, "URETICI_ADI", ComboBox3->Text.c_str());


addExpression(temp, "BARCODE", ComboBox3->Text.c_str());


addExpression(temp, "ADET", ComboBox3->Text.c_str());


addExpression(temp, "CEKMECE_NO", ComboBox3->Text.c_str());


addExpression(temp, "MALZEMENIN_TIPI", ComboBox3->Text.c_str());


addExpression(temp, "KAREL_STOK_NO", ComboBox3->Text.c_str());


addExpression(temp, "URETICI_NUMARASI", ComboBox3->Text.c_str());




addExpression(temp, "KIM_ISLEDI", ComboBox3->Text.c_str());



50




addExpression(temp, "HANGI_PROJEDE_KULLANILDI", ComboBox3-

>Text.c_str());


addExpression(temp, "DISTRIBUTOR", ComboBox3->Text.c_str());

Form2->DataSource1->DataSet->Active = false;

Form2->Query2->SQL->Clear();

Form2->Query2->SQL->Add(temp);

Form2->DataSource1->DataSet = Form2->Query2;

Form2->DataSource1->DataSet->Active = true;

}


{

if( Form2->Table1->Filter == "" )

{

cFilter = AnsiString("ISLENME_TARIHI >= '") + DateTimePicker1-


cFilter = cFilter + " and " + AnsiString("ISLENME_TARIHI <= '") +

DateTimePicker2->Date.DateString() + "'";

Form2->Table1->Filter = cFilter;



}

else

{

cFilter = AnsiString("ISLENME_TARIHI >= '") + DateTimePicker1-


cFilter = cFilter + " and " + AnsiString("ISLENME_TARIHI <= '") +

DateTimePicker2->Date.DateString() + "'";

Form2->Table1->Filter = Form2->Table1->Filter + " and " + cFilter;




51


}

}

if(CheckBox5->Checked == true )

{


{


{

if(Form2->DBGrid1->DataSource ==Form2->DataSource1)

{

wsprintf(mFilter, "DISTRIBUTOR = '%s*'", ComboBox1->Text);

aFilter = mFilter;

Form2->Table1->Filter = aFilter;



}



int i=0;

bool match=false;


{


{

match=true;

break;

}

i++;

}

if(!match)




52

}

else

{


Form2->Table1->Filter = "";


}

}

else

{




}

}

//---------------------------------------------------------------------------


{


{


{

if(Form2->DBGrid1->DataSource ==Form2->DataSource1)

{

wsprintf(mFilter, "HANGI_PROJEDE_KULLANILDI = '%s*'", ComboBox2->Text);

aFilter = mFilter;

Form2->Table1->Filter = aFilter;



}




53


int i=0;

bool match=false;


{


{

match=true;

break;

}

i++;

}

if(!match)


}

else

{




}

}

else

{




}

}

}

//---------------------------------------------------------------------------



54


{

Form3->Close();

}

//---------------------------------------------------------------------------

void addExpression(char *dest, char *dbCol, char *exp){

char temp1[5]={' ','(',0,0,0};

char temp2[10]=" LIKE ";

char temp3[5]={'"','%',0,0,0};

char temp4[5]={'%','"',')',0,0};

strcat (dest,temp1);

strcat (dest,dbCol);



strcat(dest,exp);


}

///////////////////////

void addOperator(char *dest, char *opr){

strcat (dest," ");

strcat (dest,opr);

strcat (dest," "); }



4. CONCLUSION

First of all it is proud of me doing my summer practice in Karel since Karel is one of the

leading companies of Turkey in the telecommunication area. I was appreciated to be part of

Karel; however, it was true for only one month. All of the engineers and the other workers

pay too much attention to their duty and all the works are done professionally and on time.

During my summer practice I had a chance of observing many things about business life. First

of all working environment is completely different from university. You should always

expand your knowledge and improve yourself. Moreover, it is not enough to have knowledge

only on your subject; you should have general idea about what your coworkers are doing.

When I started to work in Karel, the first thing I observed is that working environment is nottoo stressful which make me feel more comfortable. On the other hand, if I have talked about

the benefits that I got, first of all while creating database program I have learned one

programming language, Borland C++. Performing my summer practice using C++ language

has special importance on me because before starting my summer practice I was approaching

to programming language with bias. Moreover, I was sure that I will not work in the computer

area in the future. During my summer practice, my idea has changed and I started to like

programming. One thing I observed at Karel is that telecommunication and computer are tooconnected to each other. Now I am thinking to improve myself in the telecommunication area.

Karel is really good company for students who want to improve yourself in this area. The

second benefit that I got is after creating our program I entered data with their information. I

categorized them into groups. During this step, I looked datasheets and I learned a lot of

things during this process. Lastly it is good to know someone will benefit from your works. It

was helpful to learn how important the practical experience is; however, I have not got

enough theoretical background. Actually I recommend this company to all the students for

business life because Karel is one step further from most of the companies in Turkey with its

facilities and technological opportunities.

intern report(erkin karahayit

Documents