Double-two-way-voltmeter

步进电机是将电脉冲信号转变为角位移或线位移的开环控制电机，是现代数字程序控制系统中的主要执行元件，应用极为广泛。。在非超载的情况下，电机的转速、停止的位置只取决于脉冲信号的频率和脉冲数，而不受负载变化的影响，当步进驱动器接收到一个脉冲信号，它就驱动步进电机按设定的方向转动一个固定的角度，称为“步距角”，它的旋转是以固定的角度一步一步运行的。可以通过控制脉冲个数来控制角位移量，从而达到准确定位的目的；同时可以通过控制脉冲频率来控制电机转动的速度和加速度，从而达到调速的目的。(Stepper motor is an open loop control motor which transforms electrical pulse signal into angular displacement or linear displacement. It is the main executive element in modern digital control system, and is widely applied. In the case of non overloaded, the motor speed and stop position depends only on the pulse frequency and pulse number, regardless of load changes, when the stepper driver receives a pulse signal, it drives stepper motor to set the direction of rotation of a fixed angle, called "step", it is the rotation of the fixed point of the operation step by step. We can control the angular displacement by controlling the number of pulses, so as to achieve the goal of accurate positioning. At the same time, we can control the speed and acceleration of motor rotation by controlling the pulse frequency, so as to achieve the purpose of speed regulation.)

Termometr read pc com post atmega8 usart

使用51单片机和18B20采集温度，并用数码管显示(Use 51 And 18B20 collecting temperature and with digital display)

51单片机模拟PS2鼠标KEIL C51程序，单片片机采用STC12C系列，代码注释详细， (51 single-chip analog PS2 mouse KEIL C51 program, a single piece of machine with STC12C series of code comments in detail,)

桌面监视器,带键盘监视功能 可用于关闭一些广告窗口或不希望出现的任意窗口,键盘监视功能带回放器,可播放鼠标键盘的操作过程(desktop monitor, with the keyboard function can be used to monitor the closure of some advertising window or do not want to see is the arbitrary window, Keyboard surveillance function with playback device that can broadcast mouse keyboard operation process)

12864液晶显示屏、画图、显示中文、文字取模软件( 12864 LCD display, drawing, show Chinese characters modulo Software)

西南交通大学图形学实验的第二个，响应键盘的系统键和非系统键(Second, the system in response to keyboard keys and key non-system experiments Southwest Jiaotong University Graphics)

器件SN65LBC184手册，便于学习者学习开发！(Device SN65LBC184 manual for ease learners develop!)

单片机串口发送程序，试一次课设做的，非常非常好用(Chip serial transmission program, try again Lesson set, very, very easy to use)

基于TI公司的msp430g2553单片机的lcd显示程序，好用(Based on TI company s msp430g2553 MCU LCD display program, absolutely easy to use)