科强51单片机例程之8X8led59，希望对大家有用。-Section Qiang 51 MCU routine of 8X8led59, want to be useful to everyone.

51单片机实现的RS485通讯程序，单片机串行口通信程序设计列子，51单片机串行口通信程序设计例子-51 MCU RS485 communication procedures, microcontroller serial port communication program design Liezi 51 microcontroller serial port communication program design examples

51 microcomputer ultrasonic ranging program based on Guo Tianxiang MCU development board prepared by the use of HC-SR04 ultrasonic sensor to measure the distance and return to the computer through the serial communication (for hardware reasons, the t