AT89S51 MCU with LCD 1602 procedures,

PWM example.which is done using Makro C PIC programming IDE.

这是一个关于四线马达的使用说明，还是比较详细的，对想用单片机驱动马达的同学来说很实用！-This is a four-wire motors on the instructions, it is quite detailed, right to the students to use microcontroller-driven motor is very useful!

D12与电脑通过USB单片机通信的程序，开发人员可以参考

MCS-51单片机结构。由ATMEL公司生产的89C51将EPROM改成了4K的闪速存储器，他们的结构大同小异，本章将对8051单片机的结构作一介绍。-MCS-51 single-chip structure. ATMEL Corporation by 89C51 production will be replaced with 4K of EPROM flash memory, they more or less the same structure, this chapter will be the structure of 8051 for an introduction.

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

单片机的　电话拨号防盗报警器　0~9的数码管段码显示-MCU dial burglar alarm 0 ~ 9 digital code tube sections show

430成都技术培训会代码，使用IAR-4.10打开。-430 technical training in Chengdu will be the code, the use of IAR-4.10 open.

读51按键，并将ascii码返回计算机串口调试助手，-Read 51 keys, and return the computer serial port debugging assistant

//115.2k串行口通信程序，校验方式为简单双向校验, //而且是必要的，因为任何采用中断、crc等的方法 //均很难保证速度和避免错误. //总体速度5KB/秒 //单片机程序 //使用22.1184晶振-//115.2k serial port communication procedures and testing methods for the simple two-way check,// it is necessary, because any interruption used, the method crc// it is very difficult to ensure speed and avoid mistakes.// Overall speed 5KB/s// MCU procedures// crystal use 22.1184

单片机与时钟芯片ds1302接口程序，C语言代码，简单使用。-MCU and clock chip DS1302 interface program, C language code, simple to use.