计算距离和方位，经纬度

For certain source coding problems, it is well known that the Kraft inequality provides a simple sufficient condition for the existence of codes with given codeword lengths. Motivated by this fact, a sufficient condition based on the Kraft inequality can also be sought for the problem of zero-error instantaneous coding with decoder side information

n维矩阵的特征值的一种新求法，可实现特征值特征向量的求值-a new algorithm to calculate the aigenvalue of N dimensions matrix, aigenvalue and aigenvector can be worked out.

Code to calculate IP address. v4

是使用VHDL硬件描述语言设计波形发生器的文件 用PDF打开-Using the VHDL hardware description language design waveform generator use PDF files to open

本代码实现在excel表格中输入英文，可自动转换成中文，输入中文可自动转换程英文的功能-This code implements the table in the excel input in English, can be automatically converted into Chinese processes to input Chinese in English can be automatically converted function

fortran编写的相场法模拟剪切流的程序，由C-H方程来模拟了剪切流场中界面捕捉的过程，简单易学，非常适合初学者学习

一个轻量级的ＸＭＬ解析库，使用ＤＯＭ模型，采用Ｃ++和ＳＴＬ实现，是很好的源码学习对象。-Analysis of a lightweight XML database, use the DOM model, using C++ And STL realize, is a good source of learning objects.

C++核心编程技术 -C++ Core programming technology

vCardJT is a program for managment agenda basically for mobile phone or other devices that can read files with extension .vcf It can handle data such as name, complete address (home and work), several phone numbers, URLs and one photograph image.

一个关于FDTD的三维fortran90小程序.-A small program on the FDTD in fortran90