显示模块,利用51单片机UART口通讯，有C语言程序，protel99se原理图，需要自行设计PCB。附送串口调试小程序。 -display module, using 51 SCM UART port communication, C Programming Language, protel99se schematics, PCB design their own needs. Serial debugging small appliances procedures.

Protel99SE电子教案，时候初学者学习使用-Protel99SE electronic lesson plans, course for beginners learning to use

protel99se 单片机 液位原理图-protel99se SCM level schematics