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这是我学校电子工程设计的一个题目，是一个基于温度传感器的系统开发，包括了驱动电路，变送器，电源，AD，DA(This is a school of electronic engineering topics, is a temperature sensor-based system development, including a driver circuit, transmitter, power supply, AD, DA)

实现普通交通等的控制，使用超声波增加了车流量的检测(To achieve the control of general traffic, the use of ultrasound increases the detection of traffic flow.)

说明：  用来驱动DDS芯片AD9956，使其合成频率信号。针对AD9956的优良特性，实现频率和相位的控制。(It is used to drive DDS chip AD9956 to synthesize frequency signal. Aiming at the excellent characteristics of AD9956, frequency and phase control is realized.)

AVR单片机的串口传输，实现两个单片机通过串口传输简单信息(AVR microcontroller' s serial port transmission, to achieve two simple microcontroller through the serial port information)

光敏和热敏实验使用，这个小实验里面包含C语言源码和单片机文件，接线图，看完这个实验应该对光敏和热敏原件的使用入门。(Photosensitive and heat-sensitive experimental use, this little experiment which contains C language source code files and microcontrollers, wiring diagrams, this experiment should read Getting Started with the photosensitive and heat sensitive original.)

单片机键盘扫描程序 微处理器课程设计 八位抢答器(SCM keyboard scanning procedures microprocessor eight Responder Course Design)

555电路构成的振荡电路集锦,世界上最全的555电路，和大家分享！(555 circuits of the oscillator circuit highlights, the world' s most complete 555 circuits, and share!)

cypress 的PSOC DESIGNER 4.4如何在C语言中调用汇编程序.(cypress of PSOC DESIGNER 4.4 How to call in the C language compilation process.)

说明：  0.2通道180°相位差方波，3通道120°相位差方波，4通道90°相位差方波 1.试验平台stm32f103c8t6 2.2通道用定时器3的1、2通道；3通道用定时器3的1、2、3通道；4通道用定时器3的1、2、3、4通道； 3.实现方法，周期和占空比用捕获通道中断反复修改捕获值来实现 4.相位差采用定时器的生效同步规则来实现（下一次更新时间生效）(0.2 channel 180 degree phase difference square wave, 3 channel 120 degree phase difference square wave and 4 channel 90 degree phase difference square wave 1. Test platform stm32f103c8t6 2.2 channels use 1, 2 channels of timer 3; 3 channels use 1, 2, 3 channels of timer 3; 4 channels use 1, 2, 3, 4 channels of timer 3; 3. Realization method, period and duty cycle are realized by repeatedly modifying capture value with capture channel interrupt 4. The phase difference is realized by the effective synchronization rule of the timer (the next update time takes effect))

这是有关led方面的书籍，我也是在网上收集的，希望有用的多多留意(This led books, I am also in the online collection, and I hope useful for a lot of attention)