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作者 selfhu 在 PTT [ ASM ] 看板的留言(推文), 共21則
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[問題] 掃描七段同時有計分倒數功能
[ ASM ]12 留言, 推噓總分: +8
作者: fg79102828 - 發表於 2012/09/17 14:51(11年前)
11Fselfhu:把時間放大,盡量不要用跑死迴圈的delay,你會發現CPU很閒09/23 22:11
Re: [問題] RS232訊號問題
[ ASM ]12 留言, 推噓總分: +4
作者: Petrucci99 - 發表於 2012/07/02 23:17(12年前)
8Fselfhu:www.filethief.com/download/279/123.pdf.html07/04 04:19
9Fselfhu:大略架構會是這樣子,細節你要自己試07/04 04:20
10Fselfhu:www.datafilehost.com/download-2bc75d9a.html07/04 04:23
11Fselfhu:用這個,上一個無法連07/04 04:24
Fw: [請益] 使用I2C的I/O使用一定要用提升電阻嗎?
[ ASM ]44 留言, 推噓總分: +4
作者: Deltaguita - 發表於 2012/06/19 11:58(12年前)
41Fselfhu:I2C在最後一個bit的clk變low前切成OD就可以了,因為slave端07/01 23:44
42Fselfhu:它不知道何時clk會來,所以會在falling後丟出ACK訊號07/01 23:46
44Fselfhu:Pull-high電阻還是要加喔,在OD時會用到07/02 00:22
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