Its first commercial use was in the Teletype Model 33 and the Teletype Model 35 as a seven- bit teleprinter code promoted by Bell data services. ĪSCII was developed in part from telegraph code. The Internet Assigned Numbers Authority (IANA) prefers the name US-ASCII for this character encoding.
Modern computer systems have evolved to use Unicode, which has millions of code points, but the first 128 of these are the same as the ASCII set. Because of technical limitations of computer systems at the time it was invented, ASCII has just 128 code points, of which only 95 are printable characters, which severely limited its scope. ASCII codes represent text in computers, telecommunications equipment, and other devices. ASCII ( / ˈ æ s k iː/ ⓘ ASS-kee), : 6 abbreviated from American Standard Code for Information Interchange, is a character encoding standard for electronic communication.
