巧用7475、7420设计四人抢答器

巧妙地利用了集成电路7475锁存器和7420双与非门逻辑功能的相互配合,实现四人抢答器的设计功能。采用两种不同的设计思路实现四人抢答器相同的设计功能。工作原理按清零、抢答前的待机准备、开始抢答等三个抢答程序描述。

the clever use of interaction with the integrated circuit 7475 latch and 7420 pairs of NAND gate logic function, design functions of four responder. Using two kinds of different design ideas of design functions answer four of the same.The working principle,according to clear answer before the standby ready, began to answer three answer program description.