description | 在我们的单片机应用系统中,常常会遇到I/O口不够的情况。譬如说接有外部RAM而且要求有16个以上的按键,8位数码管以上的显示。而且还不包括其它的外围器件。这时整个系统的I/O资源就很吃紧了。系统的扩展性也不好。这时我们就需要考虑对单片机的I/O进行扩展了。 虽然专门的I/O扩展芯片市场上也有不少,但对于我们一般的应用,没有必要整的那么复杂。用一些简单的移位寄存器芯片一样可以实现我们的目标。下面我们 |
keywords |
G(gate)栅极,D(drain)漏极,S(source)源极1 |
introduction |
www.fafans.com There are 29 links were found on the page. There are 14 backlinks link to www.fafans.com There are 1 anchor text link to www.fafans.com,the most used anchor text in all backlinks is: 紫外工控企业网 |
update time | 2025-06-01 01:54:53 |
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