自己编写的一个小软件,可以方便的计算出LM317输出某个电压时，调压电阻的所有组合及误差，相当方便！...

1个高级的剪贴板程序VC-a senior clipboard procedures VC

pc.c是移植于μCOS-II的PC服务代码（pc.c） 主要改动： 1、#include "includes.h"改为"config.h" 2、在屏幕上显示改为向UART0发送数据，在电脑上显示，影响的函数： PC_DispChar()、PC_DispClrCol()、PC_DispClrRow()、PC_DispClrScr()和PC_DispStr() 3、获取键值改为从UART0获取，影响的函数：PC_GetKey() 4、因为没有dos环境所作的修改，影响的函数： PC_DOSReturn()、PC_DOSSaveReturn()、PC_SetTickRate()（删除）、PC_VectGet()（删除）和 PC_VectSet（删除）。 5、因为定时器不同所作的修改，影响的函数： PC_ElapsedStart()和PC_ElapsedStop()。 6、因为实时时钟不同所作的修改，影响的函数：PC_GetDateTime()。-pc.c is transplanted COS-II PC service code (pc.c) major changes : 1,# include "includes.h" with "config.h" two, displayed on the screen changed to UART0 send data on the computer, the function : PC_DispChar (), PC_DispClrCol (), PC_DispClrRow (), PC_DispClrScr (), and PC_DispStr () 3, access keys to read from UART0 acquisition, the function : PC_GetKey () 4 because no dos environment changes, it will affect the function : PC_DOSReturn (), PC_DOSSaveReturn (), PC_SetTickRate () (deleted), PC_VectGet () (deleted) and PC_VectSet (deleted). 5, becaus

此程序用fortran编写 功能: 1、是计算在载荷作用下的平面桁架位移以及杆件的轴力。轴力符号规定，受拉为正，受压为负。另外还哼计算支座反力。 2、对桁架的节点编号，采取先编可动节点，接着再编固定节点。 3、计算多工况问题 此程序出自《杆系结构程序设计》，有改动，原程序有错误-the procedure used to prepare fortran functions : 1. calculation of the load under the plane truss rod displacement and the axial force. Symbol axial force, the tension is positive, negative pressure. It also supports anti-hum calculating power. 2, the number of nodes truss, the first series to take movable joints, and then re-allocation fixed nodes. 3, the calculation of multi-state issues this procedure from the "bar structural design process," with changes, the original procedure is wrong

内部算法排序比较，按从小到大排序，快速算法，归并排序，冒泡排序等-Comparison of internal sorting algorithm, to sort by from small to large, fast algorithms, merge sort, bubble sort, etc.

还很好 -also very, very good very, very good

本文首先概述了OFDM 的原理、特征和关键技术，介绍了系统需要的几种同步。然后就同步误差对系统性能的影响进行了简单的分析，表明定时偏差和采样频率偏差将会引入码间干扰，载波频率偏差导致载波间干扰的发生。因此，在OFDM系统接收机中定时的确定、载波频率偏差和采样频率偏差的纠正是信号恢复的关键。之后对OFDM系统同步的几种实现方法进行了介绍，分析了各同步方法的性能。-The paper first outlines the principles of OFDM, features and key technologies, the system needs to introduce several synchronization. Synchronization error and then the impact on system performance for a simple analysis, show that the timing deviation and the sampling frequency deviation will introduce inter-symbol interference, the carrier frequency deviation led to the occurrence of ICI. Therefore, in OFDM system receiver to determine the timing, carrier frequency offset and sampling frequency offset correction signal to restore the key. After the OFDM system to achieve synchronization of several methods of introduction, an analysis of the performance of the synchronization method.

Finite sample effects of the fast ICA algorithm

这个程序可以计算给定点处的小区信号范围覆盖。-is program computes a map of visibility from a selected point on a topography. It has been written to help the search for radio relay best location. Because it considers only direct line of sight, it gives a good estimation for possible radio link for short distances only (less than 10 km), neglecting curvature of the Earth, Fresnel zone and atmospheric refraction on radio waves propagation. The program computes the relative elevation angle of the mask for each point (the angle is null or negative if the point is visible). The function needs a digital elevation model Z and associated (X,Y) vectors or matrices of coordinates (same unit as Z), position of the point (X0,Y0), the antenna height H0 (for instance 4 m), and the hypothetic antenna height Ha on each topography points (for instance 3 m). When no output argument is given, the function plots a map of the results (color map of mask angles, and blank for visible points, see example screenshot). The s

PDIUSBD12 dma模式下应用-PDIUSBD12 dma mode application.

通讯录系统，命令行方式操作，具有添加、删除、查询等必备功能。-Address Book system, command-line mode operation, with add, delete, query and other must-have feature.