介绍了用RS

使用89S52为核心做的USB键盘,注意修改了一下windows设备描述符以及端点处理等就行了。用了一个4*4的小键盘,有0-9十个数字键, Num Lock键,Caps Lock键,Shift键,Ctrl键,Alt键,回车键等。 最多可以有三个键同时按下，如果相交的话，最多只能两个键按下-89S52 use as the core of the USB keyboard to do, pay attention to modify the look and the windows device descriptor, such as treatment endpoint on the list. Used a 4* 4 small keyboard, has the number keys 0-9 10, Num Lock keys, Caps Lock key, Shift key, Ctrl key, Alt key, enter key and so on. Can have up to three keys pressed at the same time, if the intersection, then a maximum of only two keys pressed

RTL8139 Series PCB Layout Guide

单片机控制水温的汇编程序，通过加热开关控制水温并显示温度！-SCM temperature control the compilation process, by heating water temperature control switches and display temperature!

8051web server

一个PS2键盘单片机, 使用Philips的接口+8051,写的不错,非常值得学习.-a PS2 keyboard microcontroller, the use of the interface, Philips 8051, was a good, very worth learning.

DS1302实时时钟芯片汇编源代码工程文件-DS1302 real-time clock chip compile the source code works documents

PIC单片机从SPI，接收其他主SPI的数据-PIC Singlechip from the SPI, main SPI receive data from other

实现数码管的循环计数，数码管接法为共阴级接法。-To achieve the cycle count of the digital control, digital control connection for a total of Yin-class connection.

用于工业控制方面.常见的板卡操作.板卡型号为812板.-for industrial control. Common card operation. Card Model 812 board.

MSP430F149的数据采集程序，并显示在LED上。-MSP430F149 data collection procedures, and displayed on the LED on.