电脑音源切换控制器（带红外功能） 用AT89C251+CD4016切换控制，可控制四路以上的立体音源输入切换，一路立体声输出,有红外遥控PC功能。

四通道的AD采样转换数据，并用于键盘和数码管的操作和显示。附有参考资料和pdf格式的原理图。-Four-channel sampling of the AD conversion data, and for the keyboard and the operation of digital control and display. With reference materials and schematic diagram pdf format.

VGA视频2*2分配器图纸，protel 99制作。 -VGA Video 2* 2 Distributor drawings, Protel 99 production.

基于pic单片机的嵌入式系统的以太网通信的软件程序，可以实现pic单片机以太网开发板的网络功能，以及学习TCP/IP协议栈的使用方法-Pic based on the Embedded System Single Chip Ethernet communications software program, can achieve single-chip Ethernet development board pic of network functions, as well as learning TCP/IP protocol stack to use

驾驶椅示教板,利用控制其驱动众多的数码管，采用了max7219驱动芯片-Demonstration board chair driving, many drivers use to control their digital tubes, used MAX7219 driver chip

用单片机播放音乐的源码并提供相应的音乐制作工具 -MCU-source music player and music production provided by the corresponding instrument

LT_1B msp430开发板例子程序－TB3

该程序在8位-16位单片机上实现TCP/IP协议，含完整 C 语言源码和实现文档。-procedures in the eight to 16-bit microcontrollers to achieve TCP/IP protocol, with a complete C language source code files and achieve.

我自己编的一个一位数码管减计数的学习程序，在pic16f73已经验证了。-myself a part of a digital control by counting the learning process, as demonstrated in the pic16f73.

at89c51ed2看门狗程序-at89c51ed2 watchdog procedures

8051F040的EEPROM程序，中断实现功能，可以移植到项目中。-8051F040 the EEPROM procedures, interruption of the realization of functions, can be transferred to the project.