摘要
介绍了串行键盘和显示接口芯片 ＨＤ７２７９Ａ的各种控制命令字的功能和用法，通过实例从硬件和软件方面介绍其在单片机键盘和显示接口中的应用。
This paper introduces the function and use of control command word of serial keyboard and displays interface of HD7279A in detail, and introduces its keyboard and displays interface and application in single-chip -computer from hardware and soft via example.
