该头文件配合key.c，在main函数中调用key.c，都文件中添加key.h，使软件更清晰，一目了然...

嵌入式系统编程源代码解析光盘.iso,将文件后缀改为iso，用解压软件如winrar解压后即可-Embedded Systems Programming Source Code Analysis CD-ROM. Iso, iso file extension to. using decompression software such as winrar can be unpacked

用DS18B20设计的数字温控仪，可调整输出PWM脉宽。有Protues仿真-With DS18B20 designed digital temperature controller, adjustable output PWM pulse width. There Protues Simulation

本人是用在ＡＴ８９Ｃ５２单片机上的，能实现８通道采集数据并在四个数码管上显示！-I is used in the AT89C52 single-chip that can realize 8-channel data acquisition and possession of four digital display!

X5045EEPROM,看门狗操作所有操作完整的源代码，，以前做过的项目-X5045EEPROM, Watchdog operation of the complete source code for all operations, previously done projects

用51单片机模拟I2C，程序已调试可以使用-51 MCU simulation with I2C, procedures can be used to debug

基于c8051f020的基本程序，在此基础上可以做很多你想做的事情，只要你看懂该程序，再稍加改动。-C8051F020 based on the basic procedures, and on this basis can make a lot of you want to do, as long as you understand the program, and then modified.

学习C51时写的数码灯程序,提供给刚学单片机程序的朋友参考-When learning to write C51 digital light process, available to just school friends Singlechip procedure reference

Use Viaccess 3 on Silver card with PIC18F2620

参数整定，用在自动控制系统PID调解中。 代码为实际项目验证过。-parameter tuning, automatic control system used in PID mediation. Code for the actual project tested.

胎压检测系统接收部分源码-tire pressure detection system to receive some source