键盘接口及键盘监控程序的设计

Keyboard I/O Interface and Keyboard Control

针对目前实验箱系统中小键盘操作功能有限的缺陷 ,采用在单板机中移植小型操作系统 ,对82 5 5 A芯片加以控制 ,接受从标准键盘控制器输出的信号并进行处理 ,从而实现对标准键盘输入的控制 .通过对键盘监控程序的优化 。

For the sake of the inconvenience of mini keyboards in the current experimentation systems for students, the paper adopts the standard keyboard and embeds the mini operating system into the card. By use of 8255A, it receives and analyses the signals from the CPU of the keyboard. And with the help of the keyboard control software, it controls input of users in time.