1.案例:proteus基礎(chǔ)階段奇https://blog.csdn.net/qq_40223983/article/details/95662640
2.一般的51單片機(jī)P0口為什么要加上拉電阻?
3.74ls245_74ls245采購(gòu)信息-立創(chuàng)電子元器件商城
進(jìn)階-匯編-專業(yè)的
4.參考范例https://wenku.baidu.com/view/9e6d31166edb6f1aff001f66.html
5.https://wenku.baidu.com/view/3fc77cab6bdc5022aaea998fcc22bcd126ff4209.html?fr=search-4-income4