很好的AT89C2051的中文说明书 费了很大劲才找到的

PCI_Express PCB Guidelines

pci7222单片机的驱动程序 ，欢迎大家来下载。-SCM pci7222 driver, welcomed everyone to download.

基于51单片机的液晶12864图片驱动及串行收发程序-Based on 51 single-chip LCD driver and serial 12864 picture transceiver procedures

OCMJ 4X8 （内带中文字库）LCD显示代码，包括ASC2码，和中文显示-OCMJ 4X8 (within the band Chinese font) LCD display code, including code ASC2, and Chinese show

基于AVR系列单片机MEGA8的PS2键盘驱动程序，代码中加了去抖动处理，识别率高。 -based MCUs MEGA8 PS2 keyboard drivers, code added to jitter, high recognition rate.

在做项目（工程）的时候，我们经常要用到比较多的按键，而且IO 资源紧张， 于是我们就想方设法地在别的模块中节省IO 口，好不容易挤出一两个IO 口，却 发现仍然不够用，实在没办法了就添加一个IC 来扫键。一个IC 虽然价格不高， 但对于大批量生产而且产品利润低的厂家来说，这是一笔不菲的开支! 那，我们能不能想到比较好的扫键方法：用最少的IO 口，扫最多的键？可以吗？-Doing the project (engineering), we often use the relatively large number of keys, and the IO resource constraints, so we are trying to save in another module IO ports, finally out of one or two IO ports, only to find is still not enough there is really no other way to add an IC to sweep on the keys. Although the price of an IC is not high, but low profits, high-volume production and product manufacturers, this is spending a lot of money! That, we can not think of a better scan key method: with a minimum of IO ports, scan Most of the keys? OK?

此资料里有单片机的仿真实例。本人试了非常有用。希望此资料对大家有所帮助！-This information, there are examples of microcomputer simulation. I tried very useful. I hope that this information be helpful to everyone!

C51单片机控制系统代码升级程序通讯协议。-C51 single-chip control system communication protocol code upgrade process.

nRF24L01 RF接收发送例子程序，采用C语言-nRF24L01 RF receiver to send examples of procedures, the use of C language

此书为keilC的调试心得，有助于开发过程中错误的理解，积累开发经验！-Debugging keilC book for ideas and help to develop understanding of the process error, the accumulation of development experience!