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雨夾雪
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樓主  發(fā)表于: 2008-06-29 22:14
各位大俠，請教一個(gè)問(wèn)題��！我的筆記本電腦沒(méi)有串口，為了與觸摸屏通信用了一根USB轉串口的線(xiàn)，但是使用時(shí)發(fā)現經(jīng)常通訊不上，特別在往觸摸屏寫(xiě)程序的時(shí)候，望高手指教解決的
辦法�。�！
daizhi
一師一地一時(shí)一法
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1樓  發(fā)表于: 2008-07-04 11:04
不能完全怪質(zhì)量問(wèn)題! 現多數USB轉換都用專(zhuān)用芯片,拆開(kāi)看看就知道了
簡(jiǎn)單一點(diǎn),仔細看過(guò)通信手冊就會(huì )發(fā)現,RS232接線(xiàn)方法多種,不同的運用不同的接發(fā),同一個(gè)接法有些場(chǎng)合就連不通,
    簡(jiǎn)單USB就三線(xiàn)制,不可能運用到所有場(chǎng)合!!!

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