Atmel Uart C51程序（timer1方式）

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?

AT89C2051驱动步进电机的电路和源码(用keilC51)-AT89C2051 stepper motor drive circuits and source code (using keilC51)

MSP430串行异步通讯实现源程序，这个是一段简单的完整通讯程序，实现功能：将接受的数据原样送回-MSP430 serial asynchronous communication source realize that this is a simple and complete the communication process, the realization of functions: data will be accepted as returned

基于MCS-51单片机的双向红外计数器C程序-Based on MCS-51 single-chip bi-directional infrared counter C procedures

ASIC在VB下的开发,集成了很多方便实用的ASIC开方指令及宏命令。-ASIC under the VB development, integration of a number of convenient and practical ASIC prescribing instructions and macro command.

MCS-51单片机汇编语言数码管时钟显示程序-MCS-51 single-chip digital control assembly language clock display program

单片机控制继电器的自动化调试系统，很详细的描述。-MCU Control Relay automated debugging systems, it is described in detail.

PC机和智能型仪表通过RS485进行异步通信-PC and intelligent instrument for asynchronous communication through the RS485

CAN通讯 有源程序 很好 大家来看看 SJA1-CAN communications have a very good source to look at the U.S. SJA1

凌阳061a单片机的定时器使用例程。包括两个定时例子-Sunplus 061A routine use of single-chip timer. Includes two examples from time to time