AD7715调试程序！CPU芯片C8051F020

两线制电流 温湿度变送器原理图，MSP1221的PWM和XTR115-Two-wire current temperature and humidity transmitter schematic, MSP1221 the PWM and XTR115

由于arm板的键盘扫描程序，c语言编写。-As the arm board keyboard scanner, c language.

x5045的相关程序，可以在keil c 上运行-X5045 procedures, you can run keil c

STC12系列单片机10位AD转换C语言测试程序-STC12 Series single-chip 10-bit AD conversion C language test program

SAA3010红外遥控接收程序.C(51系列单片程序应用）-SAA3010 Infrared remote control receiver process. C (51 Series single-chip application procedure)

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?

利用mega16自带的AD进行电压测量.测量范围0~5V.-Mega16 own use of the AD for voltage measurement. Measuring Range 0 ~ 5V.

rc522原厂完整资料,包括源码,工程文件-rc522 original integrity of the information, including source code, project file

AVR 单片机访问SD ,已编译通过了，大家可放心下载-web is good I want code from here.thank every body.

C8051F2xx的大量源程序示例代码，包括汇编和C的代码-C8051F2xx sample a large number of source code, including the compilation and C code