This book investigates the fundamental principles of computer organization and architecture through a problem-solving approach. The author, S. S. S. P. Rao, draws upon years of teaching and laboratory experience to present a comprehensive guide to digital computer units. It begins with a historical overview and progresses through essential topics such as number systems, arithmetic operations (fixed, floating, and decimal), ALU design, and control unit configurations. The text also covers memory systems, bus structures, input/output devices and modes, and an introduction to microprocessors and microcontrollers, presenting problems in a graded difficulty from simple to complex.

The book is presented as an essential textbook for computer organization and architecture, stemming from extensive teaching and laboratory experience. It aims to educate readers on a wide array of digital computer units by presenting problems in a graded form, increasing in complexity. The structure suggests a pedagogical approach designed to solidify understanding through practical application. The comprehensive coverage indicates a resource intended for students and practitioners seeking a thorough grounding in the subject.