This paper discusses the application of software design to display graph plots of Digital Signal Processing (DSP) results. This design uses MATLAB programming language by utilising the MATLAB GUI. This application was built using MATLAB R2012a for the 32-bit version and MATLAB R2014a for the 64-bit version. The application can plot graphs of digital signal processing results such as sampling, convolution, deconvolution, Discrete Time Fourier Transform, Z Transform, FIR Digital Filters, IIR Digital Filters and many others. The software can be installed on all windows operating system and function as a stand-alone program with all supporting files integrated in one package installer and therefore, easily distributed. By using this application, we can resolve many cases on DSP simply and interactively.