Many science and engineering students need MATLAB for mathematical calculation and analysis. MATLAB, Mathematica and Maple are also called the three major mathematical softwares. It is second to none in numerical calculation in mathematical science and technology application software. MATLAB can perform matrix operations, draw functions and data, realize algorithms, create user interfaces, and connect programs in other programming languages. Mainly used in engineering calculation, control design, signal processing and communication, image processing, signal detection, financial modeling design and analysis and other fields. The basic data unit of \x0d\MATLAB is matrix, and its instruction expression is very similar to that commonly used in mathematics and engineering. Therefore, it is much simpler to solve problems with MATLAB than to do the same thing with C, FORTRAN and other languages. Moreover, mathwork also absorbs the advantages of Maple and other software, making MATLAB a powerful mathematical software. Support for C, FORTRAN, C++ and JAVA has also been added in the new version. It can be called directly, and users can also import their own utility programs into MATLAB function library to facilitate their later call. In addition, many MATLAB enthusiasts have written some classic programs that users can download and use directly. MATLAB product family can be used for the following tasks: \ x0d \ numerical analysis \ x0d \ numerical and symbolic calculation \ x0d \ engineering and scientific drawing \ x0d \ control system design and simulation \ x0d \ digital image processing technology \ x0d \ communication system design and simulation.