这是新华龙（www.xhl.xom.xn）开发的，基于单片机，现在可以在它的网站上免费下载，不过当初他可是花了500大元买的。...

利用51单片机演奏音乐。定时器控制歌曲的频率（音调），延时时间控制节拍，可以轻松更改为自己想要的歌曲-The use of 51 single-chip music. Timer control of song frequency (pitch), delay time to control the beat, you can easily change the songs you want

这是我在我们公司做的C51加油单片机程序-in our company do C51 microcontroller refueling procedures

飞行控制中的转换坐标下的距离计算，可以根据给出的经纬度算出实际距离，开发环境为MPLAB,单片机为16位的dsPIC30F4013-Flight control of the conversion of a distance-based coordinates can be calculated in accordance with the actual latitude and longitude given distance from the development environment for the MPLAB, single-chip 16-bit dsPIC30F4013

光电鼠标的电路图，很好的，多多交流学习-Circuit diagram of optical mouse, very good, a lot of exchange of learning

本要求适用于Microcon-T02半导体冰箱控制板（以下简称控制板）。本控制板由电源板、显示控制板两部分组成。-The requirements apply to Microcon-T02 semiconductor refrigerator control panel (hereinafter referred to as the control panel). The control panel from the power supply board, display panel is composed of two parts.

直流电机调速实验C语言程序,使用L298N驱动-DC Motor Speed Experiment C language program, use the L298N drivers

电子秤,能显示重量,设置重量,超量程报警-Electronic Scale showing the weight, set the weight, ultra-range alarm

VGA视频切换矩阵源玛,采用PIC单片机16F628实现8*8的视频切换.-VGA Video Switch Matrix Mary source using PIC 16F628 to achieve 8* 8 video switching.

DDS芯片ad9854的单片机（C8051F020)控制及其外围原理图和PCB图-DDS chip AD9854 microcontroller (C8051F020) and its peripheral control schematic and PCB diagram

基于at89c52的乒乓球游戏系统，全部通过lcd菜单选择，通过proteus仿真（绝对可行）-err