The book covers topics such as linear time-invariant systems, Fourier analysis, filter design, and signal processing, and it is designed to be accessible to students who have never seen these concepts before. The book is divided into four parts: Part I introduces the concept of signals and systems, including the definition of a signal, types of signals, and the difference between a signal and a system. Part II explores the properties of linear time-invariant systems, including impulse responses, convolution, and the Fourier transform. Part III delves into filter design and implementation, including the use of MATLAB to design and test filters. Finally, Part IV discusses signal processing techniques, including filtering, amplifying, and modulating signals. Throughout the book, the author uses MATLAB to illustrate key concepts and provide practical examples. The need to study and understand the process of technology evolution is crucial in today's rapidly changing world.

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