摘要
本文介绍了作者自行设计的并行输入编码式键盘接口电路．该电路结构简单，占用ＣＰＵ机时很少，不占用Ｉ／Ｏ接口，软件设计容易，适用于各种微机控制系统键数要求较少的场合．
This paper Provides, keyboard interface circuit which using parallel input code. The circuithas simple structure, occupied a little CPU time, andneed not I/O interface. Its software can be designedsimple. The circuit can be applied the base- microcomputer control system which need a few keys.
出处
《微机发展》
1994年第6期43-45,共3页
Microcomputer Development
