The main aim of this project is to obtain a second version of PERISIK which is a CACSD software package to analyse discrete time control systems. This pproject is part one of the entire project, PERISIK Version 2.0. This software package is written in Turbo C++. Initially the pulse transfer function of the control system is obtained, then the analysys and design of a discrete time control system can be done. Chapter 1. This chapter gives a brief overview of PERISIK. Chapter 2. This chapter gives a basic understanding about discrete time control system and it's advantages. This chapter also stresses on the method used in designing and analyzing discrete time control system. Chapter 3. This chapter provides the developments of the software design. Chapter 4 . This chapter discussess the operation of the program. Chapter 5. Conclusion and suggestions.