c51单片机与ＰＣ间的串口 通信驱动程序

对MSP430片内温度传感器进行采样，输出温度到LCD * 程序使用单通道单次转换，温度显示的格式是华氏温度, * 带两位小数-On-chip MSP430 sample temperature sensor, the output temperature to the LCD* use single-channel single conversion, the temperature display format is Fahrenheit,* with two decimals

温度传感器ds18b20调试源代码，已经调试好的代码，可以直接使用。-Temperature sensor DS18B20 debugging source code, have a good debugging code can be used directly.

1520液晶的驱动源代码，c语言编写，可以很方便的嵌入到单片机或dsp以及arm中-1520 LCD driver source code, c language, it is convenient to the embedded microcontroller or dsp and arm were

基于8051单片机的遥控电风扇的红外发射源程序-8051-based remote control of the infrared emission source fans

at89c51 操作 1602 LCD 的 C源代码-AT89C51 operation 1602 LCD

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?

AVR单片机下的mmc卡控制程序，包括系统SPI模式初始化，使卡进入SPI模式及检测等-AVR cards under the VAT control procedures, including the systematic SPI mode initialization, access cards and SPI mode detection

AVR,系列单片机MEGA48应用例程,包括原理图,代码基本包括全部资源的配置应用.-AVR, the series microcontroller MEGA48 application routines, including drawings, code includes all the resources basic configuration application.

nRF24LO1_SPI程序，MCU控制两块nRF24LO1之间的无线通讯，也可以通过UART打印和发送数据-nRF24LO1_SPI procedures, MCU control nRF24LO1 between the two wireless communications, can also print and send data UART

KEIL C51使用方法的介绍!非常详细,非常实用-KEIL C51 using the method of introduction! Very detailed, very useful