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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元件。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，即给电机加一个脉冲信号，电机则转过一个步距角。-Stepper motor is the electrical impulse signals into angular displacement or linear displacement of the open-loop control components. In the non-overload case, the motor speed, and stop location depends only on pulse frequency and pulse number, regardless of the load change, that is, to add an electrical pulse signal, then turn one motor step angle.

基于44b0板的键盘开发程序,已经测试通过,接上去的是4*4的键盘-based 44b0 plate keyboard development process has been tested, Chashangqu is 4* 4 keyboard

基于keil的LPC2387ucosii系统，目前已有一个串口任务，删除已有的串口任务，可自己任意创建任务，任务切换等没问题

AT89C51与字符型液晶模块16x2联接的C语言程序-AT89C51 and character liquid crystal module 16x2 joint C language procedure

关于时钟的编程，用于Lpc2103的，外接电源，-Programming on the clock for the LPC2103, the external power supply,

arm嵌入式应用系统开发典型实例光盘，内含多个实验的源码-arm Embedded Application Development typical examples CD, containing a number of experiments FOSS

这是我在s3c44b0上移植成功的ucgui源码包，其中触摸屏还没有调通-s3c44b0 in on the success of the transplantation ucgui source package, which Touchscreen also did not emphasize-

51单片控制DS18B20,温度送数码管显示，显示精度为0.1摄氏度。压缩包中有电路图、Keil工程、Proteus仿真文件、汇编代码-51 single-chip control DS18B20, send a digital temperature display, showing an accuracy of 0.1 degrees Celsius. Keil compressed package in the works, Proteus simulation files, compiled code

运算放大器使用指南，来自于AD公司。为中英文版本。-Operational Amplifiers using the guidelines, and from the AD. Chinese and English versions.

一个可以在Arm Linux环境下运行的对时程序，基于socket编写，可移植性强。配置好了交叉编译工具链之后，直接make即可。代码采用C++的面向对象开发，简单移动，模块清晰，便于裁剪和模块复用。