基于stm32的音乐播放器

利用ZigBee技术，CC2530采集外部电压，P0.7输入-Use ZigBee technology, CC2530 acquisition of external voltage, P0.7 input

方便使用初学者，com编程例子，非常实用，欢迎下载(Convenient use beginner, com programming examples, very practical, welcome to download )

通过keil编写矩阵程序，在proteus8软件上搭建工程，然后将源代码导入protues8软件中的AT89C51芯片里，以实现矩阵键盘的原理，16个按键分别表示0-9和A-F等16个字符。(Matrix program written by keil, build on proteus8 software engineering, and then the source code to import protues8 AT89C51 chip in software, in order to realize the principle of matrix keyboard, 16 buttons respectively 0-9 and A - F.)

说明：  一款EA,操作能100%利润，1个月，外汇黄金操作，使用的就明白了，需要有外汇经验(An EA, operation can make 100% profit, one month, foreign exchange gold operation, the use of it is clear, need foreign exchange experience.)

前方交会、坐标转换代码判断象限，能够实现自动化处理数据坐标

webService取实时数据，可以动态显示数据，不用刷新页面，类似于ajax-webService obtain real-time data can be dynamically displays data not updated pages, similar to the ajax

代码是画非客户端的代码，可以重画客户端的代码-Code is non-painting the client code, you can redraw the client code

QT下的TCP/IP通信 ，实现客服端和服务器端的通信，代码简介

fifo lru opt 页面置换调度算法 void LRU(int pagenum, int treq) {  int i,j, count = 0;  int effect = 0;  pageInit();  for (i = 0; i < treq; i++){   if (vp[req[i]].mp == INVALID) {         if (count < pagenum) {     vp[req[i]].mp = count;     mp[count] = req[i];     count++;     for (j = 0; j < count; j++) {      vp[mp[j]].dura++;     }    }    else {     int maxtime = 0, maxtimevpNum = 0;     for (j = 0; j < pagenum; j++) {        if (vp[mp[j]].dura > maxtime){       maxtime = vp[mp

GSL is the GNU scientific library for numerical computing. It is a collection of routines for numerical computing in e.g. linear algebra, probability, random number generation, statistics, differentiation, integration, optimization, and differential equations