使用ZG211硬件综合实验平台（8051单片机），配有接口芯片和辅助芯片，实现数字显示与键盘输入。-useing the ZG211 hardware experimental platform (8051), with the help of interface chip and auxiliary chips, realize digital display and keyboard input

1.掌握在8051系统中扩展8279键盘显示接口的方法。 2.掌握8279工作原理和编程方法。(49/5000 1. Master the method of extending 8279 keyboard display interface in 8051 system. 2. Master the working principle and programming method of 8279.)