在Quartus的DDS设计中，通常会用到mif或者hex文件存储函数值，被ROM的IP模块调用。本程序是在Matlab环境下，根据所需数据位数和长度自定义mif文件。-Quartus DDS design, usually used in the mif or hex file storage function value, call the ROM of IP modules. This program is in the Matlab environment, according to the desired data bits and the length of custom mif file.