GCSE Computer Science Revision

1.2.4 Data storage

Understanding binary and hexadecimal is essential for computer science students because computers and other digital devices use binary code to process and store information. Binary is a base-2 number system, meaning it only uses two digits (0 and 1) to represent numbers. Similarly, hexadecimal is a base-16 number system that uses digits 0-9 and letters A-F to represent numbers.

In computer science, understanding how to convert between binary and hexadecimal is important for a variety of reasons, including:

  1. Representing binary numbers in hexadecimal makes them easier to read and work with, especially when dealing with large numbers.
  2. Understanding binary and hexadecimal is necessary for programming, as many programming languages use these number systems.
  3. Working with binary and hexadecimal is important in fields like computer networking and cryptography, where data is transmitted and encrypted using these number systems.

In short, having a solid grasp of binary and hexadecimal is crucial for success in computer science and related fields.

Numbers

1.2.4.1 Binary

1.2.4.2 Binary addition

1.2.4.3 Denary to Hexadecimal Conversion

1.2.4.4 Binary to Hexadecimal

1.2.4.5 Binary Shift

 

Characters, Images and Sound

1.2.4.6 Binary codes to represent characters

1.2.4.7 Images

1.2.4.8 Sound