32. Pearson Edexcel GCSE (1CP2) Topic 2B Units of data storage

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EDEXCEL 1CP2 Specification Reference - Topic 2B: 2.2.1 - 2.3.2

In this video we explain why computers use binary to store data. The difference between a bit, nibble, byte, kibibyte, mebibyte, gibibyte and tebibyte is explained. These are known as measurements of capacity, or how much data can be stored either in memory or on secondary storage devices.

Don't forget, whenever the blue note icon appears in the corner of the screen, that is your cue to take notes about the content being shown on the current slide.

00:00 Units of data storage
00:07 Intro
00:12 Units of data capacity - Part 1
03:07 Units
03:40 Megabyte vs mebibyte
05:09 Converting between units
06:00 Units of data capacity - Part 2
08:03 Construct expressions involving file size in the exam
09:20 Outro

Last updated: 16.07.25

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