此程序是通过位选选取那位显示来实现数码管的显示。

转速表：硬件简单，您可以用89c2051代替89c51，p1口做数据输出；p3口做位驱动，int0为转速信号输入-speed : hardware simple and you can replace 89c51 89c2051, p1 I do data output; P3- I do drive, int0 to speed signal input

MSP430开发，功能强大，非常适合于MSP430单片机开发。-MSP430 development, powerful, very suitable for single-chip MSP430 development.

ch451键盘LED管理芯片的驱动程序,很好用的,设计很标准的代码-ch451 keyboard LED chip management of the driver, the good design is the standard code

本人用单片机psd3300编制的c语言gps Nmea数据格式解析，该代码是项目的gps接口部分。-I used prepared psd3300 Singlechip c language data format gps Nmea analysis, the code is part of the project gps interface.

void InitGoertzel(void) 作用：初始化算法参数 用法：采用算法进行检测前执行一次，如果需要改变参数，调用SetParameter() float CGoertzel::GetMagnitude(unsigned char * sampleData, int length) //算法主接口 作用：对采集下来的音频数据用算法处理，返回一个结果 参数：sampleData－音频数据缓冲地址指针； length-缓冲区尺寸(音频数据数量),字节数； 返回值：返回算法结果。 void SetParameter(DWORD set_SampleRate, DWORD set_TargetFreq, DWORD set_BlockSize) 作用：设置算法参数； 参数：set_SampleRate-音频数据抽样速率； set_TargetFreq-目标信号频率； set_BlockSize－算法数据块尺寸(采样点)； 用法：调用本函数后，需要调用一次InitGoertzel(void)才会生效-void InitGoertzel (void) function: initialization algorithm parameters Usage: The algorithm performs a pre-test, if the need to change the parameters, calling SetParameter () float CGoertzel:: GetMagnitude (unsigned char* sampleData, int length)// Algorithm for the main interface role: to collect audio data from the treatment algorithm to return a result parameter: sampleData-audio data buffer address pointer length-buffer size (the number of audio data), number of bytes return value: the return of

用于Proteus仿真的LPC2106程序，编译环境为Keil uvision 3-LPC2106 for Proteus simulation procedures, the compiler environment of Keil uvision 3

硬盘MP3电路图,-Hard Drive MP3 schematics,

蜂鸣器实验beepmusic(arm7平台)-buzzer experimental beepmusic (ARM7 platform 11

PKE（被动无钥门禁系统，汽车车门控制）整个系统遥控部分源代码。-PKE (passive-keyless-entry system, car door control) remote part of the whole system source code.

一些收集到的PIC文章，相信对PIC编程员有一定的帮助-collect some of the PIC article, I believe the PIC programmers can help