The ASCII Character Set
ASCII stands for the “American Standard Code for Information Interchange”. It was designed in the early 60’s, as a standard character-set for computers and hardware devices. ASCII is used on most microcomputers, computer terminals, and printers. In addition to printable characters, the ASCII code includes control characters to indicate carriage return, backspace, and the like.
ASCII assigns a decimal number to each letter of the alphabet (both upper- and lower-case), as well as to the numbers from 0 – 9, and most punctuation signs. Each of these decimal numbers are then transposed into binary for processing, and the end result is a standard code for information exchange.The character-sets used in modern computers, HTML, and Internet are all based on ASCII.
The following table lists the 128 ASCII characters and their equivalent HTML entity codes.
Check Out the List in w3school.com
ASCII Printable Characters