1.电子琴功能 用实验板上K1~K7作为电子琴的7个按键，每个按键对应一个音符要求当按下其中一个按键，就通过P2.5口输出对应频率信号使蜂鸣器发出特定音符声...

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ARM LPC21XX proteus测试,测试已经完好,可以直接使用.谢谢!-ARM LPC21XX proteus tests have been intact, can be used directly. Thank you!

用TI单片机MSP430系列写的CRC检验程序，C语言-Using TI single-chip MSP430 series written by CRC testing procedures, C language

ADC0809_Volmeter ADC0809_Volmeter-ADC0809_Volmeter ADC0809_Volmeter ADC0809_Volmeter

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

单片机串口程序，有一定的难度，适合串口使用比较熟练的人-Single-chip serial procedures, have a certain degree of difficulty, suitable for serial use more skilled people

12864 18B20做温度计 内含有仿真 是PROUUE 的仿真-12864 18B20 contains a thermometer to do simulation is the simulation PROUUE

红外接收、蜂鸣器、时钟、led、lcd1602的一些源程序-Infrared receiver, buzzer, clock, led, lcd1602 some source code

（个人原创）这个是我在Keil下写的MAX5532--MAX5535通用的驱动代码，由于我编写的时候，考虑到通用性，所以当你使用的时候，需要根据你的器件特性几乎不用修改函数提来调用我的函数模块（我在需要调用的注释和注意点已经写的很清楚了），缩短你的工程开发周期。-(Personal original) This is what I wrote in under Keil GM MAX5532 MAX5535 driver code, as I am prepared when taking into account the general, so when you use when you need to almost do not modify the device characteristics mentioned function to call I have a function module (I need to call attention to the comments and points have been written very clearly), and shorten your project development cycle.

本文以51单片机为例介绍如何扩展USB接口进行对U盘的读写，并详细介绍FAT16、FAT32文件系统的细节以及如何编码实现单片机对文件系统的常用操作，顺带提到一点关于U盘兼容性问题的解决经验。在这里单片机是host，U盘是slave。-In this paper, single-chip microcomputer 51 as an example on how to expand the USB interface on the U disk read and write, and details on FAT16, FAT32 file system and how to encode the details of the realization of single-chip microcomputer used for file system operations, mentioned in passing that on U disk experience compatibility problems. Here is a single-chip host, U disk is a slave.