AT89C2051 source produced by the scope of ultrasonic rangefinder 20cm

适用于dos环境的串口通信，很好的程序-dos environment applicable to the serial communication, good procedures!

VC++环境下的延时程序。sleep函数，还有delay函数。-VC++ Environment delay procedures. sleep function, as well as delay function.

AVR mega48 控制四位液晶数码管-4 LCD AVR mega48 control digital tube

基于Ramtron公司的VRS51L3074高性能8位单片机的MP3(VS1003)驱动程序,程序在Keil环境编译,程序内自带一段15K左右的MP3文件,可以直接播放测试.-Based on Ramtron" s VRS51L3074 high-performance 8-bit microcontroller MP3 (VS1003) drivers, programs, the environment in the Keil compiler, the program comes with a 15K or so inside the MP3 files can play test.

麦迪工作室51单片机开发板键盘的驱动代码。设计了抬键监听机制，防止一次按键多次触发。-Madison Studio 51 MCU development board keyboard-driven code. Designed to raise key monitoring mechanism to prevent a key trigger several times.

TLC0831A8位A/D转换器(C51单片机语言驱动程序) ，很好用-TLC0831A8-bit A/D converter (C51 microcontroller language driver), with a good

485通信在工业控制及管理系统中应用非常广泛，但485总线的相关资料教材上说明的却非常泛泛，这些资料对485通讯做了详细介绍，并有应用案列，相信对朋友们很实用-485 Communication in industrial control and management system is widely used, but the 485 bus information materials on the description is very general, such information on the 485 made a detailed presentation and have applied the case of columns, I believe that friends are very practical for

AVR单片机的串口通信，C语言代码，KEIL编译文件，pretous仿真文件，资料全面详细-AVR microcontroller serial communication, C language code, KEIL compiler file, pretous simulation documents, data, full details

PIC单片机PICC环境下PIC18FXX20系列通用头文件-PIC Singlechip PICC environment PIC18FXX20 Series Universal header files

本例采用89C52, 晶振为11.0592MHZ，关于如何编制音乐代码, 其实十分简单,各位可以看以下代码.频率常数即音乐术语中的音调,而节拍常数即音乐术语中的多少拍 所以拿出谱子, 试探编吧!-Example use of the 89C52, crystal for 11.0592MHZ, on how to prepare music code, is actually very simple, you can see the following code. Frequency that is constant in terms of tonal music, and the constant beat of music terminology that is how much of the shoot so come up with music score , test made it!