19. OCR GCSE (J277) 1.2 Representing characters
About this video
OCR J277 Specification Reference - Section 1.2
A defined list of characters that are recognised and can be stored in a computer system is known as a character set. This video explores the ASCII, extended ASCII and Unicode character sets, explaining their relationship to binary and the number of characters in each set. The need for different character sets and how these have evolved over time is also explained.
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 Representing characters
00:09 Intro
00:14 Storing characters in binary
03:14 Character sets - ASCII and Extended ASCII
04:47 Character sets - EBCDIC
05:04 Character sets - Unicode
06:30 Recap
06:51 Outro
Last updated: 23.02.26
