51光电编码器实现，STC处理编码器的要求，同时编码根据PS/2协议，实现上下键以及确定键。-Optical encoder 51 to achieve, STC encoder processing requirements, as well as coding in accordance with PS/2 protocol, to achieve and to identify the key up and down keys.

光电编码程序，带角度记忆功能，掉电保存，可靠性高，从未出过差错！-Optical encoder program, with angle memory function, power-down save, high reliability, never made a mistake!

IAR 编译器下 51单片机 读取4000线 光学编码器程序-IAR compiler under the 4000 single chip to read 51 wire optical encoder program