C语言编写的单片机实用程序，包含按键扫描功能、LCD显示计数器以及串行通信模块，并配有S51/52看门狗演示

up51s001 --- LED流水灯控制 (C51,asm) up51s002 --- 警报声程序 (C51,asm) up51s003 --- 单片机唱歌 (asm) up51s004 --- LED数码显示 (C51,asm) up51s005 --- 按键扫描程序 (C51,asm) up51s006 --- S51/52看门狗演示(C51,asm) up51s007 --- 24c01读写 (C51,asm) up51s008 --- 串行通迅 (C51) up51s009 --- LCD显示 (C51) up51s010 --- 计数器 (C51,asm)