摘要
介绍了C51单片机的基本功能,C51单片机有4个I/O口,但真正可供用户使用的并行口,只有P1口。在此基础上以实例的方法介绍了一种C51单片机并行口的扩展方法,详述了其原理和设计思想,以此来满足较复杂的应用系统的使用。
The basic function of C51 singlechip having 4 I/O interfaces was described.However,only P1 can be used as a parallel interface.Moreover,a sort of expanding method of parallel interface for C51 singlechip was presented based on the examples.Its principle and design idea were specified in detail so as to satisfy still more complicated application system.
出处
《辽宁工学院学报》
2007年第4期242-243,共2页
Journal of Liaoning Institute of Technology(Natural Science Edition)
关键词
选通信号
并行口
模拟信号
strobe signal
parallel interface
analog signal
