The book is about computer architecture and operating system, which is consider as a key reference for undergraduate Engineering and computer science students connected to two subjects computer architecture and operating system (OS) subjects. Also the book can be used for early stage engineering and computer science students in matriculation stage. The book design and table of contents shows quite rich and broad coverage which gives great flexibility of subject design contain chapters on basic computer design, instruction set principles, pipelining, RISC and CISC architectures, computer...