这是个遥控程序，串口通信，中断，由数码管显示遥控结果，很适合初学者学习-This is a remote control program, serial communications, interrupt, the results from the digital display remote control, it is suitable for beginners to learn

既昨天的430串口程序后又添加了几个程序模块。3*4的矩阵键盘扫描以及通过锁存器IO口复用来驱动数码管。功能是这样：先对按键进行消抖，然后判断键值通过数码管显示通过串口发送出去。-Both procedures after yesterday' s 430 serial port to add a few program modules. 3* 4 matrix keyboard scanning and recovery through the latch to drive the di

7219级联显示16个数码管的驱动程序，与单片机通过串口通信。简单实用。-7219 Cascade 16 LED display drivers, and the microcontroller through the serial port communication. Simple and practical.