kts4a -...

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Unformatted text preview: ________________________________________________________ Ch ng 4 M ch t h p IV - 1 ___________________________________________________________________________ ____________________ ________________________________________ Nguy n Trung L p CH NG 4: M CH T H P M CH M HA 7 M ch m ha 2 n ng sang n ng 7 M ch t o m BCD cho s th p phn M CH GI I M 7 M ch gi i m n ng sang 2 n ng 7 M ch gi i m BCD sang 7 o n M CH A H P V GI I A H P 7 Khi ni m 7 M ch a h p 7 ng d ng c a m ch a h p 7 M ch gi i a h p M CH SO SNH 7 M ch so snh hai s m t bit 7 M ch so snh hai s nhi u bit M CH KIM / PHT CH N L 7 M ch pht ch n l 7 M ch ki m ch n l ___________________________________________________________________________ ____ Cc m ch s c chia ra lm hai lo i: M ch t h p v M ch tu n t . - M ch t h p: Tr ng thi ng ra ch ph thu c vo t h p cc ng vo khi t h p ny n nh. Ng ra Q c a m ch t h p l hm logic c a cc bi n ng vo A, B, C . . .. Q = f(A,B,C . . .) - M ch tu n t : Tr ng thi ng ra khng nh ng ph thu c vo t h p cc ng vo m cn ph thu c tr ng thi ng ra tr c . Ta ni m ch tu n t c tnh nh . Ng ra Q + c a m ch tu n t l hm logic c a cc bi n ng vo A, B, C . . . . v ng ra Q tr c . Q + = f(Q,A,B,C . . .) Ch ng ny nghin c u m t s m ch t h p thng d ng thng qua vi c thi t k m t s m ch n gi n v kh o st m t s IC trn th c t . 4.1. M CH M HA M ha l gn cc k hi u cho cc i t ng trong m t t p h p thu n ti n cho vi c th c hi n m t yu c u c th no . Th d m BCD gn s nh phn 4 bit cho t ng s m c a s th p phn (t 0 n 9) thu n ti n cho my c m t s c nhi u s m; m Gray dng ti n l i trong vi c t i gi n cc hm logic . . .. M ch chuy n t m ny sang m khc g i l m ch chuy n m, c ng c x p vo lo i m ch m ha. Th d m ch chuy n s nh phn 4 bit sang s Gray l m t m ch chuy n m....
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This note was uploaded on 01/18/2012 for the course INFORMATIK 2011 taught by Professor Phanthuongcang during the Winter '11 term at Cornell University (Engineering School).

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kts4a -...

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