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目的：Ø 对使用 8051 微控制器的设计与研究交通灯信号系统。目标：Ø 对创建软件时间延迟Ø 写一个程序 trafficlight 系统Ø 组装、 下载和测试那些在目标板上。

成功的最新测试tslib，运行在RMI AU1200哦！！很难得到它！！

The PCF7991AT is a fully integrated Advanced Basestation IC, ABIC, designed for car immobilizer systems providing read and write access to an identification transponder. The device is intended for use with the NXP transponder family (PCF79xx) as well as other transponder types operating at 125 kHz and employing ASK, Amplitude Shift Keying for write and AM/PM for the read operation. The receiver characteristics (amplifier gain,filter cutoff frequencies) can be optimized to system and transponder requirements. The PCF7991AT IC is designed for easy integration into immobilizer read/write and read-only systems featuring a high degree of integration and very low external component count. The device integrates a powerful antenna driver/modulator, a low-noise adaptive sampling time demodulator, programmable filters/amplifier and digitizer, required to design high-performance basestations. A three wire microcontroller interface is provided for programming the PCF7991AT as well as for th

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软件仿真SPI串行EEPROM时序控制的C程序，在DOS下使用BC31编译

RTC芯片DS3231在linux下的驱动源码-RTC chip DS3231 in the linux driver source code under the

此代码是用来控制泵电机使用GSM移动。GSM收发器模块将安装在现场，并控制电机。可通过手机发送各种代码进行控制（开、关、开一定时间）。你可以通过短信给手机充电。你可以得到余额查询。

一个数字显示时钟的程序，用的是DS1302时钟芯片，用51单片机直接接口读取指令，有protues方针并且配合1602显示！-A digital display clock procedures, using a DS1302 clock chip, using 51 single-chip direct interface to read instructions, and have protues approach with 1602 show!

蓝牙硬盘mp3硬件设计方案--Blue tooth hard disk MP3 hardware design.