一种简单的基于51单片机的数字频率计的设计~-A simple 51 microcontroller-based digital frequency meter designed to

这是基于单片机所设计的数字频率计，里面包含了原理图，仿真图，c程序-This is what is designed based on single chip microcomputer digital frequency meter, contains the principle diagram, the simulation diagram, a c program