摘要
针对低成本单片机行列式键盘应用中键盘占用硬件资源多、实时性差等问题,开发了一种采用定时扫描和计数去抖方法的键盘系统,并建立了实时操作系统的简单任务调度模型,实现了键码按键识别、消抖处理和计算键码值功能.
According to the problems of the non-coding keyboard in low price single-chip computer system, such as costing a lot of hardware resources and having bad real-time performance, a new keyboard system was designed by using scheduled scanning and counting button de-jitter methods. And a simple task scheduling model was established in this real-time operation system. The functions of key scanning, button de-jiitter processing and key number calculating were realized.
出处
《苏州市职业大学学报》
2010年第1期26-28,共3页
Journal of Suzhou Vocational University
关键词
非编码式键盘
计数去抖
实时性
定时扫描
non-coding keyboard
counting button de-jitter
real-time performance
scheduled scan
