1.2 Memory and Storage

In this module, we will uncover the essential components and concepts that enable computers to store and retrieve data effectively. This module covers the role of memory and storage in modern computing, demonstrating their importance in both system performance and functionality.

We will learn about primary storage, including the key differences between RAM and ROM, their purposes, as well as the concept of virtual memory. Next, we will examine secondary storage, its various types (optical, magnetic, and solid-state), and how to choose the right storage medium for different applications.

We will learn about the units of data storage, the binary format computers use to process information, and how data capacity is calculated. From there, we’ll examine the representation of numbers, characters, images, and sound, learning how these elements are stored and manipulated digitally. Finally, we’ll tackle data compression to understand how file sizes are reduced while balancing quality and efficiency.

By the end of this module, you will understand both memory and storage concepts. With this foundation, it will become clear how computers handle, store, and process data.