This report provides an overview of the architecture of computer systems, focusing on the components of a computer system and their interrelationship. It explores the different types of memory and how they are attached to the processor. The report also delves into the ways in which data is converted and stored in computer systems, including the binary coding system. It covers topics such as input units, memory units, central processing units, output units, RAM, ROM, secondary storage, and more. The report is a comprehensive guide to understanding the architecture of computer systems and how data is processed and stored.