头件的中的#ifndef，这是一个很关键的东西。比如你有两个C文件，这两个C文件都include了同一个头文件。而编译时，这两个C文件要一同编译成一个可运行文件...

126*64或192*64LCD驱动程序包，控制芯片HD61202-126* 64 or 192* 64LCD driver package, control chip HD61202

彩色充电器PCB电路图彩色充电器PCB电路PCB

LCD1602液晶显示器的驱动程序,是用AVR的M16L来驱动的.-LCD1602 LCD driver, is to use the AVR to drive the M16L.

用单片机C语言编的日历芯片PCF8563的实时时间显示C程序源代码，可供单片机开发人员参考。-MCU series of the C language PCF8563 calendar chip real-time hours of C source code available to developers SCM reference.

基于51单片机的遥控电风扇的红外线接收程序-Based on 51 single-chip infrared remote control fans receiving procedures

20ma的电流环通信回路仍应用于一些远程通信的场合，本文为其实现过程。-20ma current loop

16F87X单片机的CAN通信程序，通过实验板验证，帮助学习，进而提高-CAN MCU 16F87X Communication Program, through the board certification, to help study, and improve

本人以前做的一个DVD+TV 项目，51用做控制，含 NEC红外遥控接收和转发，VFD1632驱动，OSD 芯片M35055，NTSC高频头控制以及I2C 24C02的读写，因为以前所写，有些地方看起来有点乱，但功能模块OK，整个程序也是可以运行的，希望能给初用者有点参考-I used to do a TV DVD, 51 used as a control, with NEC infrared remote control and forwarding, VFD1632 drive, OSD M35055 chip, NTSC tuner control and I2C 24C02 read and write, because it was written in some places appear to be a little messy, but functional modules OK, the entire procedure can be run in hopes of giving users a bit early reference

DDS数字信号发生器,采用AD9835DDS 专用芯片 输出范围1K--10MHZ 采用X25045作看门狗及数据存储器，用于设置各项参数的存储 内含电路图， 源程序 及一些相关资料-DDS digital signal generator, using AD9835DDS ASIC output range 1K-- Knoxville watchdog for the use of X25045 and data memory, used to set various parameters of storage containing circuit, the source and related information

440BX开发板 LED显示测试 试验程序-440BX Development Board LED tests procedures