74ls193計(jì)數(shù)器怎么設(shè)計(jì)
用74LS193設(shè)計(jì)一個(gè)27進(jìn)制計(jì)數(shù)器，還要用數(shù)碼管顯示，個(gè)位就需要做成十進(jìn)制計(jì)數(shù)器，而74LS193是四位加/減計(jì)數(shù)器，需要改成十進(jìn)制計(jì)數(shù)器并向十位進(jìn)位，作為十位的CP脈沖。再將十位、個(gè)位改成27進(jìn)制計(jì)數(shù)器，用兩片譯碼器配兩個(gè)數(shù)碼管顯示...
掃一掃，添加客服微信