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陶利雄
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樓主  發(fā)表于: 2018-07-26 10:47
,書(shū)上沒(méi)有程序，求大神編寫(xiě)應該簡(jiǎn)單易懂的印證一下只考慮人行道交通燈的監控程序。
某人行橫道設有紅綠兩盞信號燈，一般紅燈亮路邊設有按鈕SF,行人橫穿街道時(shí)需要按一下按鈕。4S后紅燈滅，綠燈亮，過(guò)5S后綠燈閃爍四次(0.5秒亮0.5秒滅)，然后紅燈又亮。從按下按鈕后到下一次紅燈亮之前這一段時(shí)間內按鈕不起作用。根據時(shí)序要求設計出紅燈綠燈的控制電路。用I0.0對應的開(kāi)關(guān)模擬按鈕的操作,用Q0.0和Q0.1分別代替紅燈和綠燈的變化情況，觀(guān)察Q0.0和Q0.1的變化。

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