由于arm板的键盘扫描程序，c语言编写。

51单片机扩展usb方安 51单片机扩展usb方安-51 Single-chip Single-chip expansion usb Mrs 51 Mrs usb expansion

基于51系列单片机内部定时器写的一个时钟程序-51 Series single-chip based on an internal timer to write a clock procedures

这是一个通信程序，用的51单片机系统，用它可以实现弹片机相互连接相互通信的作用-This is a communication program, the 51 SCM system, it can be achieved with shrapnel machine connected to the role of mutual communication

51程序库，一些例，学51单片机的基础用，-51 libraries, a number of cases, learning the basis of single-chip microcomputer 51, and

msp430 test code and examples for using a 5438

本程序是一个简单的流水灯程序,对初学者来说是很容易掌握的,特别是对C51的初学者!--A simple water light program. It is easy to understand for beginners, especially who are learning C51.

单片机控制液晶显示汉字的程序-SCM Chinese character LCD control procedures

51上运行UCOSII，你要是想移植，但是不会，可以看看，有启发-51 UCOSII run, if you want to transplant, but will not, can see that enlightening

基于SJA1000的CAN开发程序-USE SJA1000 OF CAN-BUS SOURCE PROGRAM

详细介绍了51单片机的指令系统，通过此文档进一步了解51单片机的体系结构-Detailed instructions for 51 single-chip system, the adoption of this document to learn more about 51 single-chip architecture