单片机读写信息纽扣，DS1990A

啁啾脉冲的源代码，啁啾度可调，是一个很好的源程序。(Chirped pulse of the source code, adjustable chirp degrees, is a good source.)

SIM卡电话本读写方案，了解SIM文件系统和外部接口的实战方案，采用EMC915芯片实现。(SIM card phone book reader program, to understand SIM file system and the external interface of practical solutions, using EMC915 chip.)

RX8025T 时钟芯片，高精度，精度每天0.5秒 时间通过串口发送(RX8025T clock chip, high precision, accuracy of 0.5 seconds every time sent through the serial port)

51单片机可调电子钟 数码管显示 调整小时、分钟(adjustable clock)

说明：  AD9850/AD9851信号发生器语言，含hex文件，串行，并行代码(AD9850/AD9851 Signal Generator Language, Including Hex Files, Serial and Parallel Codes)

说明：  PID control texas insturement

74HC595+LED显示程序,好东西(74HC595+ LED display program, good things)

说明：  通过使用tm4c123单片机调制出一个spwm波进行输出，(Through the use of tm4c123 MCU modulation of a SPWM wave output,)

基础的51单片机开发程序，适合学习单片机C语言开发的初学者，关于十进制、十六进制、二进制数之间转换的程序。(basic c language program for new 8051 mcu developers ,suitable for new learners of muc c language developers,about nuber cardinal convertion of decimals,hex and binary.)

项目16 基于单片机LCD数字测速仪的设计 使用C++程序编程(Item 16 LCD digital speedometer on chip design using C++ programming)