This textbook Continuous Time Signals and Systems has been written to meet the requirements of students of engineering colleges and polytechnics. This book is aimed to provide the students a comprehensive knowledge of classification of signal and systems, analysis of continuous time signals, linear time invariant - continuous time system. The materials of the reference books have noteworthy influence on this book. The author is thankful to her colleagues and students for their assistance in the preparation of this book. Finally, the author wishes to express her gratitude to M/s. Sara publications for bringing out this book within a short span of time.