easyarm 1138 用c语言开发的 2401无线 发送程序

读韦根26程序,将韦根26代码读取到单片机进行显示和处理-read wiegand program

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?

X5045芯片的C51程序，X5045是看门狗加EEPROM-X5045 chip C51 procedures X5045 is the watchdog increase EEPROM

PROFIBUS DP总线 从站源码 西门子-PROFIBUS DP bus stop source from Siemens

dds中文资料，从原理入手，交你如何去设计dds。-dds Chinese information, starting from the principle of paying you how to design dds.

用AVR的 I2C读写24C02 先在24C02中写入一段数据,然后断电,再送电,将EEPROM中的数据发送给PC机-24C02 using AVR I2C-read the first paragraph in the 24C02 to write data, and power outages, sending electricity, EEPROM data will be sent to the PC,

单片机学习的具体步骤，希望能够给初学单片的朋友们帮助。-Singlechip learning specific steps, hoping to chip to the novice friends to help.

一个用于控制和读取GPS 系统的单片机程序。 所用的单片机是MICROCHIP 的PIC18F252-The singlechip program is used for controling and read GPS system.The singlechip is PIC18F252 of MICROCHIP

本程序为数码管显示处理模块 占用I/O RC3,RC4,RC5 使用RAM 节 程序包括: InitSPI 初始化SPI子程序 LEDlight 送七段码显示子程序 入口参数 LED_DATA 出口参数 无-This procedure for the digital display processing module occupied I/O RC3, RC4, RC5 use RAM section include: InitSPI initialize SPI sent to Seven-Segment Subroutine LEDlight code display subroutine parameter exports LED_DATA entrance parameters without

can总线c语言 canopen 源程序-canbus canopen source program