本程序为基于PIC单片机16F877a芯片的车尾灯设计（c程序）

Stm32F4 Fatfs SD卡读写应用程序。它使用SPI接口。

电能计量芯片SA9904的读写程序，用的是SPI方式，IAR MAP430开发环境！-SA9904 chip energy metering reading and writing process, using the SPI mode, IAR MAP430 development environment!

使用gsm gps模块的车辆跟踪系统

基于GPS和GSM的车辆安全和事故警报系统

基于ARM的任一波形发生器，可以有几种波形的产生。-some thing of ARM which can contain many waves

lpc2292的can总线的简单收发程序 底层驱动程序都有-can lpc2292 the bus transceiver procedures simple bottom-driven processes

51单片机，c程序，8*8点阵，

用于AlRERA 公司DE2开发板上的USB 调试的实例-AlRERA company for the DE2 development board USB debug example

pic programming guide in c

提供的程序是供四相步进电机使用。本实验使用的步进电机用直流+12V电压，电机线圈由A、B、C、D四相组成。 2. 驱动方式为四相单四拍方式,各线圈通电顺序如下表。表中首先向A相线圈输入驱动电流，接着向B，C，D线圈通电，最后又返回到A相线圈驱动，按这种顺序轮流切换，电机轴按顺时针方向旋转。若通电顺序相反，则电机轴按逆时针方向旋转。-provide for the procedures of the four-phase stepper motor use. This experiment used the stepper motor 12V DC voltage electrical coils A, B, C, D phase. 2. Four-driven approach to making four single-phase, the coil electrifying sequence the following table. Table A first phase coil input drive current, then to B, C, D coil electricity and eventually return to the A-phase coil driven by the rotation order of this switch, the electrical axis by rotating clockwise direction. If electricity in reverse order, the motor shaft by the anti-clockwise rotation.