nandtotetris chap 3

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Nandtotetris Chap 3. 유건우. Combination vs Sequential. Combination logic 입력의 변화가 바로 출력에 반영 특정 시점 출력이 그 시점의 입력에 의해서만 결정 Output=input Sequential logic 출력 값은 현재 입력과 이전 출력에 의해서 결정 output=input + previous output. Sequential logic. 메모리 필요 이유 output=input + previous output 이전의 출력을 저장하기 위해 - PowerPoint PPT Presentation

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Nandtotetris Chap 3

Nandtotetris Chap 3Combination logic Output=inputSequential logic output=input + previous outputCombination vs Sequential

output=input + previous output , Latch Flip-flop

Sequential logicClock Sequential logic

-: (rising edge, falling edge)

-: Sequential logic

- 1cycle: tick-phase(low) +tock-phase(high)-

Clock

D Flip-flop

D Flip-flop

Bit register

inloadQQ0000( )00100100( )0111( )10011011( )1100( )1111( )Bit registerBit register

RAM

RAM

RAM

-: , -: . -4 0~15 - Counter

http://terms.naver.com/entry.nhn?docId=1982082&cid=602&categoryId=602Flip-Flop