An Acronym for American Standard Code for Information Interchange.
The ANSI X3.4 standard specifying a character set with 95 characters with codes ranging from 32 to 126 (0x20-0x7E). The codes from 0 to 31 have come to be known as control characters and are not specified by ASCII. Neither is any code beyond 126, since ASCII was designed strictly as a 7-bit encoding. It was published in 1968 and is by far the most successful and popular encoding ever conceived.