The counters four outputs are designated by the letter symbol q with a numeric subscript equal to the binary weight of the corresponding bit in the bcd counter circuits code. Jan 27, 2015 compteur asynchrone exercice corrige fonctionnement du compteur 7490 compteur 7490 pdf compteur asynchrone modulo 10 bascule jk compteur synchrone modulo 8 compteur asynchrone modulo 6 compteur. Question compteur synchrone modulo 3 bascules d forums. They are synchronously presettable for application in programmable dividers and have two types. Note that the jand kinputs are all set to the fixed value 1, so the flipflops toggle. Pdf excompteur circuit electrique design electronique.
Utiliser les bascules jk 7476 pour donner les schemas des. View and download velleman modules velleman manual online. Such counters are generally referred to as decade counters. Apr 04, 2009 i am making a modulo 10 counter because i need a 1 hz clock for my design the clock input to the counter is a 10 hz signal. Commande magnetique installee en standard dans le compteur. The cd4017 is the one of the most popular decade counter divided by 10 counter.
A decade counter requires resetting to zero when the output count. It has a medium speed of operation, typically 5mhz. To make is a mod10 counter, when the output is 1010 count 10 you need to reset the counters, so take outputs q4 and q2 connect it to to a nand gate so that when both are high,the counters are reset to. To make is a mod 10 counter, when the output is 1010 count 10 you need to reset the counters, so take outputs q4 and q2 connect it to to a nand gate so that when both are high,the counters are reset to zero. The various configurations of the modulo meter box allow it to be adapted to any environment. Modulo meter box equipped modular solution modulo is a range of rectangular meter boxes for inline water meters. Name size bytes manufacturer parameter 1 always equal to zero network type 1. The problem is that, when i implement my design to a fpga, my tool warns me that there may be a problem due to clock skew, because the clock is being generated after a combinational network two levels of and gates to.
Bascules, registres, compteurs, memoires circuit asynchrone. Avec 3 bascules on peut realiser 238 combinaisons et avec 4 bascules on peut. It offers a simple, comprehensive and highperformance solution for connecting customers to the drinking water network. Revised february 2000 74ac163 74act163 synchronous presettable binary counter 74ac163 74act163 synchronous presettable binary counter general description the acact163 are highspeed synchronous modulo16 binary counters. The 74ls90 counting sequence is triggered on the negative going edge of the clock signal, that is when the clock signal clk goes from logic 1 high to logic 0 low. Sep 04, 2017 compteur asynchrone modulo 10 a base des bascules jk. Cpt s0 s1 s2 s3 s4 horloge reset 110 corriges des tests n2 module architecture des ordinateurs filiere mi 1ere annee s2 202014 test n2 sujet n1. Le nombre maximal detats possibles, ou modulo maximal, dun compteur est egal a 2n, ou n represente le nombre des bascules dans le compteur.
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