51watch-dog

webrtc中的vad代码，单独的vs2008工程，可以运行，供学习研究使用。(it is the vad code from webrtc, it is a program of vs2008, you can run it successfully, and it is very useful for study and research.)

CC2530 步进电机控制实验。一个简单的例程(CC2530 stepping motor control experiment)

nrf905 接收机程序 89C52 验证通过 绝对好使(nrf905 receiver program 89C52 verified through absolutely so)

高精度电压表(24bit) VB源程序,简单修改可实现多量程(precision voltage (24bit) VB program, a simple change can be realized more range)

通过把开机次数记录在24C02中，并在数码管上显示出来， 124C02的写保护脚为低电平，即允许写(Boot number of records in the 24C02, and displayed on the digital 124C02 write-protect pin is low, that is allowed to write)

超声波测距模块扩展实验，使用超声波传感器，把数据结果显示在1602上。(Ultrasonic Ranging Module extension experiments using ultrasonic sensors, and display data results in 1602.)

数字量-模拟量转换器，可以实现单片机处理的数字量信号转换成模拟量电压电流信号输出(Digital analog converter)

公交自动报站系统的设计，需要用到语音芯片，还有显示器，用单片机设计，protues进行仿真(Automatic stop system bus design, the need to use voice chip, as well as monitors, MCU design, protues simulation)

用于计算同步电机发生三相短路故障时，功角随时间的变化关系。(For the calculation of the three-phase short circuit fault occurs synchronous motors, power angle changes with time.)

ti公司电弧检测板原理图及使用说明，主要利用时频域特征检测电弧(TI company arc detection board schematic and instructions for use)