基于单片机C51语言编写计算器 能够在通过单片机矩阵键盘实现几位数的加减乘除。-Based Microcontroller C51 language Calculator by SCM matrix keyboard to achieve several of the number of addition and subtraction, multiplication and division.

AD转换器程序，将模拟信号转换为数字信号，基于51单片机设计-AD converter, converts analog signals to digital signals, based on 51 single chip design

基于ICL7135和51单片机的数字电压表-Digital voltage meter based on ICL7135 and 51 single chip microcomputer