Freescale I.MX51调试板

电话机的工作原理,有振铃电路,电话极性保护电路,还有双音多频发送接收电路-Telephone the working principle, has ringing circuit, Phone polarity protection circuit, as well as send DTMF receiver circuit

关于sd卡２．２的协议，是sandisk的牌子-2.2 on the sd card agreement is sandisk brand

汽车通讯控制程序，用红外线控制，发射接收程序均有，汽车状态包括左转，右转，刹车，前车左转，后车超车等-automotive communications control procedures, using infrared control, launch procedures have received, including the state of vehicle turn left, turn right, brake, the first car left, after overtaking other vehicles

中国广州周立功单片机移植的ucosII 很实用-Guangzhou, China ZLG MCU transplant ucosII very practical

mcf5272的引脚比较多，设计原理图的时候比较复杂，可以用该的规范原理图，protel99se格式。-MCF5272 more of the pin, when the schematic design more complicated, can be used in the schematic diagram of the specification, protel99se format.

基于SHT71数字温湿度传感器的采集实现，89c51-SHT71 digital temperature and humidity sensors based on the collection of achieving, 89c51

对初学者非常有用的24C16程序,我就是从这个程序开始的- To the beginner extremely useful 24C16 procedure, I am start from this procedure

51单片机读写usb移动硬盘。提供全套资料，原理图，固件源代码。-usb mass storage module

5807收音机模块用于炬力平台，性能OK！-Radio module for the 5807 Actions platform, the performance of OK!

用单片机不同的IO口驱动数码管，以解决IO口不是一个PO口的问题。-Microcontroller IO port with a different drive digital tube, to address the IO port is not a PO mouth problem.