Download - 第六章 时序逻辑电路
Transcript
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, y(tn)=F1[x(tn),q(tn)] q(tn+1)=F2[p(tn),q(tn)] p(tn)=F3[x(tn),q(tn)]
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,, .(1) (01),;(2) ,01;(3) ,.
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RS
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RSRS0RS1RS:Qn+1=QnRS
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RSS+R=1(1) RS;(2) ,;,;RS RS,,,,,, RS.,RS,,.
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RS ,E.
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D ERSDEEEEE
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:,.,CP
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RS
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JKCP=1,,J,K, CP, CP=0,,
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JK ,CP=1,,;CP,,,Q CP RS.CP=1,.JK.CP=1,,
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,,. G1G2RS,G3~G6,D
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CPCPCP
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RSDJKT
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RS
( )
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JK Qn+1=JQn+KQn
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D
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T
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N74LS16174LS191
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74LS16074LS190
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TfUmtwtrtf
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55555555555562555276R8C1Tw=1.1RC555267R2CTw=0.69(R1+2*R2)*C
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RSJKDT
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RS 1P166 6.2.2 P175 6.2.7 3P176 6.2.9 P185 6.3.2P201 6.4.3 P201 6.4.41561 01112151929404142