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qiulong216
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樓主  發(fā)表于: 2009-09-22 18:17
　
　大家好：
　　　　　小弟是新手，最近在做一個(gè)紅綠燈的課題，要求有左拐，和人行道，主程序方面已經(jīng)搞定，但是用七段數碼管倒記時(shí)，小弟也找到一種方法，就是分別用七個(gè)輸出去控制數碼管的七個(gè)端子，但是這樣一邊要兩個(gè)數碼管，兩邊四個(gè)可就是４*７＝２８個(gè)輸出，大家也知道多了這么多的輸出，那得多多少錢(qián)？各位大哥不知道有沒(méi)有什么方法可以減少ＰＬＣ的輸出．
469423209
哥用酒瓶換酒喝
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1樓  發(fā)表于: 2009-09-22 19:03
我想說(shuō) 你可以用PLC去控制單片機  在用單片機 控制數碼管啊

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