ASCII and ANSI character sets.
Standard English key characters.
ASCII stands for American Standard Code for Information Exchange. It is a set of 128 characters used on American computers. The first 32 are control and spacing characters which are nonprintable. The remaining 96 are the standard characters that you will find on your American computer keyboard. Each character is given its own number reference. As with most things computer-related, the characters are counted from zero (not one), so they cover a numerical range of 0-127.
In addition to the 128 ASCII characters, there is an ASCII extension of 128 more characters, covering the numerical range 128-255. These extra characters are graphic and international glyphs, and, together with the 128 regular ASCII characters, comprise the ANSI character set. ANSI stands for American National Standards Institute.
In the fields provided on the CharacterTabulator, enter a
range of numbers from 32 upward (32 itself is a space character), then click display
to view a list of numerical references and the characters that they represent. For web pages,
an author encodes each character by placing an ampersand and a hash (
Nota bene: Depending on your computer settings, you may or may not be able to see every character in the extended range 128-255. On a Windows platform, any nondisplayed character will come out as a box (). This box does not necessarily mean that the character does not exist. The character may be a control, or the fonts on your system may not support it.
You may enter numbers beyond the 0-255 range if you wish. The ASCII (and ANSI) ranges simply represent the lowest range of Unicode. There may, however, be many undisplayed characters beyond 255, again depending on your computer settings.
The first column will display the character number (in ASCII or Unicode). The second will display the ASCII or Unicode character itself. The third column will show the code that will display that character in a browser. The fourth column will display the HTML 4.0 named entity that corresponds with that code, if any. The fifth column will appear only if a font is chosen, and will display (provided, of course, the font is installed on your computer) the character corresponding to the character number for that font. If it is a Unicode font, it will match the character in the second column. If it is not a Unicode font, it may not match beyond the ASCII range.