IHYPRESS PROGRAMMING
Complete table of ASCII Codes
The first 32 ASCII characters (0-31) and 127 (DEL) are commands historically used to control a teleprinter, such as carriage return (13) and line feed (10). For this reason they are referred to as control characters, control codes or non printable characters.
The remainder of the regular ASCII characters are the visible or printable characters known as plain text. These characters, often referred to as the ASCII Standard Character Set, include uppercase letters, lowercase letters, digits, symbols (like $ or @) and basic punctuation.
Various extended versions have been developed for different purposes such as to support proprietary technology, different alphabets, or simply to draw geometric forms on the screen.
This is the CP437 (Code Page 437) version which was present on the original IBM PC in 1981. It is often the extended set used by programming languages like C but is is not standard. Some programming environments do not support it or use a different set. In such cases, the use of Unicode is an alternative to display non-standard characters.
