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tx198835
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樓主  發(fā)表于: 2012-12-13 02:52
自己想做個(gè)小設備,料帶上的產(chǎn)品
正反轉計數(正轉加一 反轉減小)
請大家給點(diǎn)意見(jiàn),
加減記數感覺(jué)比較難;

具體要求:1.成本低,高可靠性
         2.免維護,適應各種不同類(lèi)型料帶產(chǎn)品

料帶是透明朔料的,產(chǎn)品也是朔料的
[ 此帖被tx198835在2012-12-13 05:19重新編輯 ]
catfree
虛心向各位學(xué)習。!
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1樓  發(fā)表于: 2012-12-13 12:39
對,不一定是行程開(kāi)關(guān),一個(gè)中間繼電器或者軟繼電器也行,和正反轉關(guān)聯(lián)
一日晚自習,化學(xué)老師批評一同學(xué)坐姿不好,問(wèn)他:“你見(jiàn)過(guò)哪個(gè)名人科學(xué)家是像你這樣坐的?”我隨口說(shuō)了一句:“霍金……” 然后就沒(méi)有然后了……一頓狠批啊

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