microprocessor designed music player, in PROTEUS simulation environment running

完全用C语言编写的C51单片机多任务操作系统,任务调度基于主动放弃,特别适合STC单片机.-Entirely in C language C51 single-chip multi-tasking operating systems, task scheduling based on the initiative in giving up, and are particularly suited Singlechip STC.

本源代码用于使用ATMEL公司的AT89C51芯片实现硬件mp3，其中包括有特色的mp3解码算法和U盘功能读写程序。-Source code for use ATMEL Corporation AT89C51 chip hardware mp3, have characteristics which include mp3 decoding algorithm and U disk function to read and write procedures.

自己写的用AVR 单片机产生正弦波.用示波器观察波形很好！-Write your own single-chip generated sine wave with AVR. Oscilloscope to observe waveforms with very good!

Nokia3310 LCD 51系列单片机控制源代码-Nokia3310 LCD 51 Series single-chip microcomputer to control the source code

Protel 99中的快捷键 非常好用 -Protel 99 in very handy shortcut keys

ＡＲＭ７芯片S3C44B0x的PS2键盘的源程序-ARM7 chip S3C44B0X the PS2 keyboard source

DIY多功能转换器（已调试通过）。 本原理图可以实现USB/RS232、USB/RS422、USB/RS485接口转换功能。只需安装USB驱动程序即可实现USB转串口的功能，简单方便。另外只需对电路图稍作改动即可实现RS232/RS422或RS232/RS485转换功能。 心动了吗？不如赶快行动，拥有属于自己的五合一的接口转换器吧！-DIY Multi-function Converter (has debug through). The schematic diagram can be achieved USB/RS232, USB/RS422, USB/RS485 interface conversion. Simply install the USB driver can achieve the function of USB to serial, easy and convenient. Also just to make a minor amendment to the circuit can be realized RS232/RS422 or RS232/RS485 conversion. Echocardiography it? Action as soon as possible, with their own-one interface converter吧!

系统下,地球坐标转换的源代码,在WGS-84坐标和北京54坐标之间的一套转换参数,可以全国通用的，在每个地方会不一样，因为它们是两个不同的椭球基准。 // WGS2GK.CPP : C++ version of Ottmar Labonde s WGSDHDN3.PAS with CPU time measurement // compile with MS Visual C++ version 6.0 or do the necessary modifications for your compiler // // Conversion of -system, the Earth coordinates conversion source code, the WGS-84 coordinates and coordinate between Beijing 54 set conversion parameters can be nationwide, in every place to be different, because they are two different ellipsoid benchmarks.// WGS2GK.CPP : C version of Silverstone Labonde s WGSDHDN3.PAS with CPU time measurement// compile with MS Visual C version 6.0 or do the necessary modifications for your compiler//// Conversion of

数字时钟--51单片机 可以用KEY调整时间，已经通过验证-Digital Clock- 51 Singlechip KEY can be used to adjust the time has passed validation

sd 卡驱动软件包: SD卡物理层 ---- SD卡SPI模式支持的命令-sd card driver package: SD Card Physical Layer SD cards support SPI mode command