PS2-mouse

基于51单片机实现定位，并通过sim900a把定位信息发送到指定手机(base on 51 chip,send location to phone)

ISO/IEC 7816-1-1998 ISO/IEC 7816-2-1998 ISO/IEC 7816-3-2006 ISO/IEC 7816-4-2005 ISO/IEC 7816-5-2004 ISO/IEC 7816-6-2004 ISO/IEC 7816-7-1999 ISO/IEC 7816-8-2004 ISO/IEC 7816-9-2004 ISO/IEC 7816-10-1999 ISO/IEC 7816-11-2004 ISO/IEC 7816-12-2005 ISO/IEC 7816-13-2007 ISO/IEC 7816-15-2004 (ISO/IEC 7816-1-1998 ISO/IEC 7816-2-1998 ISO/IEC 7816-3-2006 ISO/IEC 7816-4-2005 ISO/IEC 7816-5-2004 ISO/IEC 7816-6-2004 ISO/IEC 7816-7-1999 ISO/IEC 7816-8-2004 ISO/IEC 7816-9-2004 ISO/IEC 7816-10-1999 ISO/IEC 7816-11-2004 ISO/IEC 7816-12-2005 ISO/IEC 7816-13-2007 ISO/IEC 7816-15-2004)

对舵机的调试功能，通过多个舵机完成整个机器人的拼凑，进而完成机器人跳舞的任务。(The debugging function of the steering gear completes the assembly of the whole robot through multiple steering gear, and then completes the task of robot dancing.)

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.)

《无线通信系统仿真--C++实用模型》一书的配套源代码，里面包含了，通信系统的所有模块，对学习通信和C++有很好的借鉴()

51单片机的示波器，所有资料,dajiakuaixia(an Oscilloscope by mini51)

数码管的显示程序，数码管循环显示900-999~(Digital loop display 900-999 ~)

超声波测距，可以通过串口助手显示，当小于设定值时，显示0，当大于设定值时，显示1(Ultrasonic Ranging, through serial aides showed that when less than the set value, 0, when greater than the set value, indicating a)

51单片机考勤系统下位机程序，可以配合上位机软件实现考勤功能，将hex文件下载到51单片机即可使用(51 MCU control procedures can be achieved with the PC software attendance function, the hex file into the microcontroller 51 can be used)

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)