This is a PWM process, suitable for beginners to use, easy to learn, I was from...

自动售货机控制系统设计 要求： 设计制作一个自动售货机控制系统。 该系统能完成货物信息存储，进程控制，硬币处理，余额计算，显示等功能。 该系统可以管理四种货物，每种的数量和单价在初始化时输入，在存储器中存储。用户可以用硬币进行购物，按键进行选择。 系统根据用户输入的货币，判断钱币是否够，钱币足够则根据顾客的要求自动售货，钱币不够则给出提示并退出。 系统自动的计算出应找钱币余额、库存数量并显示。 -Vending machine control system design requirements: Design a vending machine control system. The system can complete cargo information storage, process control, coin handling, balance calculation, display and other functions. The system can manage four kinds of goods, the quantity and unit price of each in the initialization input, stored in memory. Users can use coins shopping button to choose. The monetary system based on user input to determine whether enough money, coins, according to customer requirements is sufficient Vending, coins were not given prompt and exit. The system automatically calculate the balance should be looking for coins, inventory number and displayed.

单片机实验板完整资料（PCB），包括PCB原理图、单片机技术基础教程与实践书的实验电路板、STC89C51安装图、89S51实验板的一些说明。介绍详细，适合初学者。-Complete information Microcontroller Experiment board (PCB), including the PCB schematics, single-chip microcomputer-based tutorial and practice test book, circuit boards, STC89C51 installation diagram, 89S51 experiment board some of the instructions. Describes in detail, suitable for beginners.

ucOS+minigui开发详细资料，非常实用-ucOS+ minigui ???详???柿??????实用

 S3C2440的驱动源码，包括adc模数转换、beep蜂鸣器、camera摄像、ds18b20温度检测器、key按键控制、led灯显示.

可实现一个跟随鼠标转的眼睛的有趣vb程序-Can realize a transfer of the eyes follow the mouse interesting vb program

正弦调制PWM代TMS320LF2407A。驱动永磁同步电机单相电机。变频驱动器（VFD）

mp3 方案源代码，方案电路图，PCB图，以及源代码都有。-mp3 program source code, the program circuit diagram, PCB plans, as well as all the source code.

I2C 总线8 位远程I/O 扩展口芯片PCF8574 的原理与应用-I2C-bus 8-bit remote I/O expansion port of the PCF8574 chip Principle and Application

通过555振荡器与RLC相互配合组成振荡电路。然后通过51单片机的定时器测量震荡时间。得出对应的电阻阻值、或者电容值、电感量。

应用背景控制4轮车使用Arduino  ； ； ； ；关键技术4个直流电机和4个步进电机的驱动程序