NEC公司的ASSP芯片pdf文档，用于步进电机和直流电机的PWM控制，支持与51单片机通信。-NEC corporation，ASSP chip，datasheet，pdf，function is control the motor,using step control or PWM control.

缺水传感器V1.0，绝对原创，传感器好-Water sensor V1.0, an absolute original, a good sensor

80C51单片机中结合555电路实验和单片机定时器频率计实验，里面包含555定时器的datasheet和实验源程序-80C51 single-chip integration of 555 timer circuit experiments and the frequency of single-chip experiment, which contains 555 timer datasheet and experimental source

1．熟悉硬件仿真工具KD30的使用。 2．修改样本程序 SAMP1a，使无论在计数或停止计数时，按 SW3 均对计数值清零，并停止计数。 3．编制一个秒表程序, 测试精度为0.1秒，按 SW1键启动计数，再按一次 SW1键停止计数。任何时候按 SW3 键停止计数，并对计数值清零。 4．按 SW1键后， 以 0.1 秒为单位开始计数，再按一次 SW1 键停止计数。若按 SW1 键时间超过2秒，则计数值清零，回到初始状态。-1. Familiar with the hardware simulation tool KD30 use. 2. Revised procedures SAMP1a samples, regardless of the count or counts at the end, according to SW3 numerical terms were right, reset, and stop counting. 3. Preparation of a stopwatch procedures, testing accuracy of 0.1 seconds, according to bond SW1 start counting, according to a key SW1 stopped counting. By SW3 any time to stop counting bond and reset the count. 4. By SW1 bond, after 0.1 seconds for start counting, according to a key SW1 stopped counting. If SW1 keys by the time more than two seconds, then reset the count and return to the initial state.

热电偶测温C51程序，可以同时测7路不同种类的热电偶，用一路铜电阻做零点补偿-C51 thermocouple temperature measurement procedures, and it can simultaneously test seven different types of road thermocouple, with copper resistivity way to do 0.1 Compensation

非接触式IC卡编程样例C2-non-contact IC card Programming Example C2

基于KeilC的I2C总线实际应用子程序，已作过多个项目-Based on the I2C bus KeilC practical application subroutines, has made a number of projects

利用C8051F020作为控制器，对74LS165进行控制-C8051F020 use as a controller, control of the 74LS165

单片机AT90S系列 制作简易USB接口（软件模拟,无usb硬件）。installstep- Monolithic integrated circuit AT90S series manufacture simple USB connection (software simulation, non- usb hardware). Installstep

STM32实现读卡器功能,适用于STM32E-EVAL开发板-STM32 card reader function to achieve for STM32E-EVAL development board