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可编程逻辑设计中testbench的书写方法，测试技巧。(Writing testbench programmable logic design, test techniques.)

单片机为at89s52控制步进电机正反调速实验,(The stepper motor positive and negative control experimental)

STM32 外部中断程序，用于学习用中断来控制按键(STM32 External Interrupt program)

demo for arm ethernet

说明：  利用STM32F106RET6的串口1发送字节或数据(STM32F106 com comunication)

周立功的I2C核及驱动 周立功的I2C核及驱动(I2C core)

51单片机简单进行测试是否正常测试内容为LED灯等(51 single simple test whether the normal test content for the LED lights)

用8253芯片和单片机产生方波，很好的理解并学习8253芯片的功能。(8253 chip and microcontroller to generate a square wave, a good understanding and learning the function of the 8253 chip.)

进行飞思卡尔的试跑阶段，非常有效止咳的程序啊啊啊，，( Freescale s trial run stage, ahhh, very effective cough of the program, )

系统以单片机为主控单元，能够及时监测到系统故障和环境中有无火灾，火灾一旦发生将实现声光报警，并采取有效措施控制火情的发展，将火灾消灭在萌芽状态，以确保人身财产安全，最大限度地减少损失。(System based on single-chip computer control unit, the ability to monitor system failures and environments there is no fire, fire in case of sound and light alarm, and take effective measures to control the development of the fire, fire in the bud, to ensure the personal and property safety, and minimize losses.)