ASCII (/ˈæsk/ (listen) ASS-kee),[3]:6 abbreviated from American Standard Code for Information Interchange, is a character encoding standard for electronic communication. ASCII codes represent text in computers, telecommunications equipment, and other devices. Most modern character-encoding schemes are based on ASCII, although they support many additional characters.

ASCII chart from a pre-1972 printer manual
MIME / IANAus-ascii
Alias(es)ISO-IR-006,[1] ANSI_X3.4-1968, ANSI_X3.4-1986, ISO_646.irv:1991, ISO646-US, us, IBM367, cp367[2]
ClassificationISO 646 series
Preceded byITA 2, FIELDATA
Succeeded byISO 8859, Unicode

The Internet Assigned Numbers Authority (IANA) prefers the name US-ASCII for this character encoding.[2]

ASCII is one of the IEEE milestones.