这是一块用protues制作的学习板。主要是以AT89C52单片机为核心的学习板，包含LCD,LED,矩阵键盘等模块。对初学单片机者十分有用。-This is a study made use of protues board. Mainly based on AT89C52 microcontroller as the core of the study panels, including LCD, LED, matrix keyboard module. SCM are very usefu

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.