teach-ict.com logo

THE education site for computer science and ICT

This page is part of the old A451 specification - current syllabus here

1. Introduction

Specification point:

i) define the terms bit, nibble, byte

ii) define the terms kilobyte, megabyte, gigabyte, terabyte

iii) understand that data needs to be converted into a binary format to be processed by a computer



Bits, bytes, kilobytes, megabytes, gigabytes and terabytes are all used to describe disk space, data storage or the capacity of system memory.

You need to be able to define each of these different sizes and to place them into the correct order from smallest to largest. It would also be a good idea to be able to identify the most suitable storage capacity for a given scenario.