AT89S52

单片机控制的音乐播放器的proteus仿真以及源程序，导入单片机通过测试过能正常工作，希望对须要的人有所帮助。(Music player SCM proteus simulation and control of the source code, import the microcontroller through tested to work properly, we want to help people who need.)

sine signal graphic visual c++ platform?????enter the frequency and the amplitude

基于51单片机的PT2314音频功放程序，可实现MIC和音频输入切换及音量音调控制，并用5110显示(Based on 51 single-chip audio amplifier PT2314 program can achieve MIC and audio input switching and volume tone control and display with 5110)

protues的教程，初学者的必备，可以学习很多东西，对自己收益很大(study protues)

大整数阶乘新思路，实现了大整数阶乘的程序(Large integer factorial new ideas, the realization of a large integer factorial process)

用C语言实现matlab的butter函数中低通和带通功能,高通和带阻没写,有兴趣的可以自己加入.(Using C language to achieve matlab butter function low-pass and band-pass function, high pass and band stop did not write)

This is LM3S9B92 Sample Code data

可实验0.5KHZ到10KHZ的简单测频,并由数码管显示出来!(Experimental 0.5KHZ can be simple to 10KHz frequency measurement by digital tube display!)

基于51单片机实现定位，并通过sim900a把定位信息发送到指定手机(base on 51 chip,send location to phone)

EDA课程设计抢答器的程序，将程序加入仿真电路可直接运行出结果(EDA course design responder programs, add the program simulation circuit can be run directly the results )