离散数学，是好的学习课件，可用于考研或其它

运用C语言实现对操作系统文件管理的实现。二级文件目录。能实现对文件的读写，不同用户之间的共享，权限管理，打开关闭等操作。在DOS中用指令实现。

The SoundIn class provide a set of functions to interface a sound card for input signal. -SoundIn provide a set of function "s to a sound card interface for input signal.

this a FFT algorith using by matlab code-this is a FFT algorith using by matlab code

三对角矩阵最常用最快速的追赶法，应用广泛。更是样条插值逆运算的重要工具-Tridiagonal matrix most commonly used to catch up with the most rapid method, widely used. Spline Interpolation is an important tool for inverse operation

二格码转换的算法-two grid transcoding algorithm

这是一个对数学表达式求值的C++ class，详细的说明在Calculator.pdf中。-this is a mathematical expression evaluates the C class, detailed description of the Calculator.pdf China.

"Radar_eq.m"函数实现方程 (1.61）。输出是 dB 中的信噪比或在 Km 范围内不同的地方输入的设置用于每个案例。

这是计算几个数的运算，对初学者用户有用，简单解释了代码运算-This is the calculation of a few number of operations useful for the beginner users, the simple explanation of the code computing

基于LU分解的直接求解方法，求解复系数方程组A.x=b的解-Based on direct LU decomposition method, to solve complex coefficients equations Ax = b solution

该程序定义了一个向量类，里面的元素是模板形式，定义了有关向量类的各种属性，方法及运算符重载函数。根据向量处理的程序实现矩阵数乘-The program defines a vector class, which the element is the template form, the vector class defines the various properties, methods, and operator overloading function. According to the procedures in place to achieve matrix vector multiplication