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42-ps2键盘LCD1602液晶显示.对于初学学习硬件开发的同学们，有很大的帮助哦。(42-ps2 keyboard LCD1602 LCD display. For the beginner to learn the hardware development of students, very helpful Oh.)

能从SD卡读取MP3文件，并且识别后通过LD3320播放MP3，具体使用只需新建一个.ini系统文件存在sd卡，在里面设置好关键词并且所需播放的MP3文件即可(Read MP3 files from the SD card through the LD3320 play MP3 and identify specific use simply create a new the ini system files sd card exists inside set keywords and required to play MP3 files can)

msp430的adc测试程序，如果需要ADC学习的，可以看看，或许有些帮助。(msp430 of adc testing procedures, if desired ADC to learn, you can look, maybe some help.)

实现数码管0-7的静态显示，采用c语言编写。(play led)

一个变压器保护的程序，是配电变电所内的保护程序(A transformer protection program, is within the power distribution substation protection program)

PC与单片机进行通信。能够在VC6.0进行仿真。注意:visual2008不能仿真。(PC to communicate with the MCU. Can VC6.0 be simulated. Note: visual2008 not emulation.)

AT89C51+液晶显示屏，按输入字符输出相应的显示，源代码为C语言编写，希望对大家有帮助。(The LCD of AT89C51+ screen display output according to the input character, the source code is written in C language, we hope to help.)

单片微型计算机简称单片机，是典型的嵌入式微控制器（Microcontroller Unit）， 单片机芯片 常用英文字母的缩写MCU表示单片机，单片机又称单片微控制器，它不是完成某一个逻辑功能的芯片，而是把一个计算机系统集成到一个芯片上。(Microcontroller chip microcomputer referred to, is a typical embedded microcontroller (Microcontroller Unit),     Single chip Commonly used letters of the abbreviation indicates MCU microcontroller, microcontroller, also known as single-chip microcontroller, it is not complete a certain logic functions of the chip, but to a computer system integrated into a single chip.)

USB2.0原理与工程开发光盘 欢迎下载(The USB2.0 principles and engineering development of CD-ROM Download)

对矩阵键盘的程序编写，详细地讲述了如何扫描键盘的输入！(The matrix keyboard programming, detailed tells the story of how to scan the keyboard input!)