单片机应用系统键盘优化编码技术研究

Study on the Key Board Optimization and Coding Techniques in the Microcomputer Application System

在分析和研究了独立编码和矩阵编码技术的基础上,本文提出一种新的混合编码技术。使用本技术,采用(M+N)条IO线,可以实现M×(N+1)个按键编码。本技术优化了单片机的键盘编码技术,提高了其IO资源的利用率,在单片机应用系统中有很好的实用价值。

This paper proposes a new kind of keyboard coding method： hybrid coding based on independent coding and matrix coding.With this method we can realize the code of M×（N＋1） keys with the IO pin number of M＋N.This method optimizes the keyboard coding technology of a microcomputer application system,increases the utilization of IO resources,and has a good practical value in the microcomputer application system.