单片机89c51对usb操作的全过程,初始化，读写-SCM 89c51 right usb operate the entire process, initialization, reading and writing

工程师在用Keil开发程序时，在代码性能要求较高的场合，需要对代码段的执行时间作统计。比如在做LED显示屏软件扫描程序，或一些定时采集数据程序，如果在软件仿真的时候就能够清晰知道代码段的运行时间，那就可以对程序进行优化，或者插入汇编代码(asm)达到最高运行速度。 关键字:Keil DLL C语言 ASM 汇编-engineers in the development process with Keil, the code performance requirements higher occasions, need to block the execution time statistics. For example, in the software do LED scanning procedures, or some regular data collection procedures, If the software simulation time can understand clearly code of the running time, it can process optimization, or insert code compilation (asm2) to achieve maximum speed. Keywords : Keil DLL C language compilation ASM

基于单片机的数字灵敏电子钟设计，准确的实现时，分，秒显示-Based on the number of sensitive electronic clock microcontroller design, an accurate realization of hours, minutes, seconds displayed

这是一个步进电机调速的程序，可以完成100级的调速。-This is a stepper motor speed control procedures, to be completed 100 of the governor.

LPC2378 LCD演示工程源代码，希望大家喜欢-LPC2378 LCD demo project source code, I hope everyone likes

利用单片机做的机器人的程序，用C语言编写，内涵不少有用的驱动程序，大家看看，广交有技术的好友，847909867-Robot using microcontroller to do the procedure, using C language, meaning a number of useful drivers, take a look at, and made many skilled friends, 847,909,867

单片机51的剑杆织机程序. 源程序,调试通过.-the Loom procedures. Source code, debugging through.

ADC0809数据采集系统 ADC0809数据采集系统-ADC0809

对于没有i2c接口的单片机来说，要用标准i2c器件通讯来说只能通过软件模拟了 本程序提供几个最高效的函数实现其功能，新方法，更高效-For there is no single-chip interface for i2c, i2c devices use standard communications software simulation run only through the procedures provided by several of the most efficient function to achieve its function, new methods, more efficient