"A character set refers to the composite number of different characters that are being used and supported by a computer software and hardware. It consists of codes, bit pattern or natural numbers used in defining some particular character. A character set may also be referred to as character map, charset or character code." (techopedia 2021)
"Every word is made up of symbols or characters. When you press a key on a keyboard, a number is generated that represents the symbol for that key. This is called a character code. A complete collection of characters is a character set." (BBC 2021)
techopedia. 2021. “Character Set.” 2021. https://www.techopedia.com/definition/941/character-set.
BBC. 2021. “Hexadecimal and Character Sets.” Bitesize. 2021. https://www.bbc.co.uk/bitesize/guides/zp73wmn/revision/4.