Contents: 1. Introduction 2. Mathematical Modelling of Physical Systems 3. Transfer Function 4. Block Diagram Representation 5. Signal Flow Graphs 6. Laplace Transform 7. Time Response Analysis 8. Feedback Characteristics of System 9. Stability of The System 10. Root Locus Method 11. Frequency Response Analysis 12. State Variable Analysis 13. State Models 14. Eigen Values, Vectors and Solution of State Equation 15. Digital Control System P. Papers