What Does American Standard for Information Interchange (ASCII) Mean?
American Standard for Information Interchange (ASCII) is a method of encoding characters that is based on the order of alphabetic characters in the English language.
Techopedia Explains American Standard for Information Interchange (ASCII)
Technically, ASCII is 7-bit representing only 128 characters (0-127). The range 0-31 are control characters, with 32-127 representing alphabetical characters from A to Z, numerals from 0 to 9 and punctuation marks (though not in that order). ASCII only may be used to encode U.S. English.