null
A character that is all 0 bits. Also written as "NUL," it is the first character in the ASCII and EBCDIC data codes. In hex, it displays and prints as 00; in decimal, it may appear as a single zero in a chart of codes, but displays and prints as a blank space.
Nulls are naturally found in binary numbers when a byte contains all zeros, and they are used to pad fields (see padding). A null may function as a delimiter; for example, in C, a null character is inserted at the end of a character string to mark the end of the text.
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| The Null Is the First |
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| Note the first character at the top of this chart of ASCII characters. The 00 means 0000-0000 bits. |
null
1. Maths
a. quantitatively zero
b. relating to zero
c. (of a set) having no members
d. (of a sequence) having zero as a limit
2. Physics involving measurement in which an instrument has a zero reading, as with a Wheatstone bridge
| (programming) | null - A special value used in several languages to
represent the thing referred to by an uninitialised pointer. |
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