noun
code set
Computing term for a defined collection of codes, such as a character set or a set of operation codes.
この符号集合はASCII文字を含んでいる。
This code set includes ASCII characters.
文字集合 (character set) is a specific type of code set that maps characters to codes, while 符号集合 is a broader term for any collection of codes.
Compound of 符号 (code, sign) and 集合 (set, collection).