基于8051通过串口测试4*4矩阵键盘，通过键盘按键发送A-F字符到串口调试助手。本程序可通过加LCD1602接受串口发送过来的数据。-Based on 8051 through the serial port test 4* 4 matrix keyboard, the keyboard keys send characters to the serial debug AF assistant. This program can be sent by Canada LCD1602 receiv

8051串口测试程序，可以在硬件开发过程做测试8051单片机串口工作是否正常-8051 serial test procedure, the test can be done in hardware development process 8051 serial port is working properly