AT89C5131 realize the source mass storage.

protel元器件TQFP-44封装。做好的封装，可以直接用于PCB的绘制！-protel components TQFP-44 package. Do a good job of packaging, can be directly used for PCB drawing!

这是单片机读写CF卡的详细设计，很有用处-SCM CF card reader for the detailed design, useful

4×4矩阵键盘，当我们按那个键时吧键值显示在数码管上，并把建值发送到PC机；-4 × 4 matrix keyboard, when we press that button when you key in the digital tube display, and to build value is sent to the PC machine

this is a source code for usinf sd card with PIC

89c2051Control LED(RGB).

TLC5615的10位AD转换程序,C直接调用汇编-TLC5615 10-bit AD conversion process, C direct call compilation

单片机初学入门程序,不停地循环显示数字0~9。-Beginners Introduction to SCM process, a continuous loop display numbers 0 to 9.

单片机实现直流数控稳压电源,可调电压为0-9.9伏,步进为0.1伏,可以自动扫描键盘以增加或者减少电压-MCU NC Regulators DC power supply with adjustable voltage of 0-9.9 volts, stepping to 0.1 volts, can automatically scan the keyboard to increase or reduce the voltage

线路板（PCB）级的电磁兼容设计是现代设计高速电路必须考虑的问题，现提供给大家的这个设计方案可以帮大家（电子工程师）很好的解决这个问题。- The line board (PCB) the level electromagnetic compatibility design is a question which the modern design high-speed circuit must consider, presently provides for everybody this design proposal may help everybody (electronic engineer) very good solution this question.

基于MEGA8单片机的AVR单片机STK500编程器源代码(GCC编译器),改软件完全实现ATMEL STK500协议-based MEGA8 SCM STK500 AVR Programmer for the source code (GCC compiler ), completely changed the software to achieve agreement ATMEL STK500