C51单片机开发板电路和源代码，很详细，内部有该开发板的说明。顺便感谢下制作的公司...

测试GPIF用的原理图、上位机程序，以及固件-GPIF test used schematics, PC procedures, as well as firmware

此程序为本人在公司开发的继电器功能测试仪，用KEIL C编写。可以测试线圈电阻，接触电阻，吸合释放电压，时间等参数。采用WINBONG W77E58 单片机。-This procedure I developed Relay Functional Tester, using KEIL C preparation. To test the coil resistance, contact resistance, pull-release voltage and time parameters. Singlechip WINBONG W77E58 used.

mp3播放器软件，使用处理器T6280芯片。-mp3 player software, the use of T6280 processor chip.

adc ， ad7705 模拟spi总线的keil c51 程序，经过调试通过。-adc, ad7705 analog spi bus keil c51 procedures, after debugging through.

单片机为控制器件的，一个小巧的频率测试器。用c语言编写，用过验证和实际实践。-microcontroller for the control device, a compact frequency device. C language with the preparation, certification and used actual practice.

基于AT89C51的电子钟源程序和Protel电路图，该电路可以实现定时开关灯，整点报时，在线调整时间、日期、定时开时间和定时关时间。 Protel电路图 其它类别 电子钟源程序 电路图源程序-AT89C51-based electronic clock source and Protel circuit, the circuit can realize lamp timer switch, the whole point of time, on-line adjust time, date, time and from time to time from time to time to open clearing time. Protel circuit diagrams of other types of electronic circuit source clock source

温度传感器ds18b20调试源代码，已经调试好的代码，可以直接使用。-Temperature sensor DS18B20 debugging source code, have a good debugging code can be used directly.

高精度实时时钟-SD2001驱动程序，在要求较高精度的地方可以作为参考资料。-High-precision real-time clock-SD2001 driver in place require a higher accuracy can be used as reference materials.

51单片机浮点数存放到EEPROM中的程序范例-51 microcontroller to float stored in the EEPROM process model

这是原创的基于PIC单片机的红外数据传送的接口程序包-This is the original PIC microcontroller-based infrared data transmission interface package