在MCS51上分别利用C和汇编编写了利用达林顿驱动继电器、动态扫描检测矩阵按键、检测外部中断、在液晶屏LCD1602上显示动态字符。经验证，能成功运行。-In which use the MCS51 C assembly wrote the use of lyndon drive relays, dynamic scanning for detecting matrix buttons, detection, and external interruption in LCD screen on