摘要
MC144 99是一种BCD码输入 -十进制码输出的串行显示驱动器 .在单片机显示系统中 ,它占用的I/O口线少、单片控制显示位数多并且使用方便可靠 ,得到了广泛应用 .文章介绍了MC144 99的性能特点及其典型应用实例 ,包括通用接口电路设计、显示驱动程序设计及巧用MC144 99DP段构成特殊显示电路的方法。
MC14499 was the serial display driver of BCD input and decimal output. It was widely used in MCU system because of its little of using I/O PIN,much of controlling D-digits and convenient use.The characteristics of MC14499 and its typical application,about general designs of interface circuit,display driver and the methlods of comprising special circuit,skills by using MC14499 DP, etc were introduced.
