ASCII


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Related to ASCII: Unicode, ASCII art

ASCII

or

American Standard Code for Information Interchange,

a set of codes used to represent letters, numbers, a few symbols, and control characters. Originally designed for teletype operations, it has found wide application in computerscomputer,
device capable of performing a series of arithmetic or logical operations. A computer is distinguished from a calculating machine, such as an electronic calculator, by being able to store a computer program (so that it can repeat its operations and make logical
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. A seven-digit (or seven-bit) binary number (see binary systembinary system,
numeration system based on powers of 2, in contrast to the familiar decimal system, which is based on powers of 10. In the binary system, only the digits 0 and 1 are used.
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) can represent one of 128 distinct codes. Thus, in decimal equivalents, the series "72, 69, 76, 76, 79" represents the letters "h, e, l, l, o" in ASCII. With the introduction of its personal computer in 1981, the International Business Machines Company (IBM) increased the number of available characters to 256 by using an eight-bit byte. This IBM-extended ASCII set has become a de facto standard. However, the inability of US-ASCII to correctly represent many other languages became an obvious and intolerable misfeature as computer use outside the United States and United Kingdom increased. As a consequence, national extensions to US-ASCII were developed that were incompatible with one another. This in turn led to the standardization of 16-bit (or "double-byte") and 32-byte character sets, such as UnicodeUnicode
, set of codes used to represent letters, numbers, control characters, and the like, designed for use internationally in computers. It has been expanded to include such items as scientific, mathematical, and technical symbols, and even musical notation.
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, that could accommodate large numbers of linguistic and other symbols.

ASCII

[′as‚kē]

ASCII

American standard code for information interchange: a computer code for representing alphanumeric characters

ASCII

ASCII

(American Standard Code for Information Interchange) Pronounced "ask-ee," it is the built-in binary code for representing characters in all computers except IBM mainframes, which use the EBCDIC coding system. ASCII was originally developed for communications and uses only seven bits per character, providing 128 combinations that include upper and lower case alphabetic letters, the numeric digits and special symbols such as the $ and %. The first 32 characters are set aside for communications and printer control (see ASCII chart).

A Byte Holds ASCII and Then Some
Since the common storage unit in a computer is an 8-bit byte (256 character combinations) and ASCII uses only the first 128 (0-127), the second set of 128 characters (128-255) are technically not ASCII, but are typically used for foreign language and math symbols. In the first PCs running DOS, they also contained elementary graphics symbols. In the Mac, the additional values can be defined by the user.

ASCII Vs. Hex
In technical applications typically used by developers, you may have a choice between entering data in ASCII or "hex" for editing or searching. ASCII is entered by typing in regular text, but because there are not enough keys on the keyboard to enter 256 distinct characters, the hexadecimal (hex) numbering system is used. Hex is entered by typing only the digits 0 to 9 or the letters A to F, and it provides a precise way of defining any of the 256 possible combinations in the byte, whether they be control codes (0-31) or the last 128 (128-255). See hex chart, ASCII file and Unicode.
References in periodicals archive ?
As our members continue to expand their services locally and nationally, having a resource to mitigate their risk of improperly applying sales tax is simply one less thing our community of IT providers have to worry about," said Jerry Koutavas, President, The ASCII Group.
3) Let [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII.
Commas or other punctuation (affects delimited ASCII data dumps)
Upcoming plans for 2014 include the eight city ASCII IT SMB Success Summits; online registration for this complementary event is at www.
2) in the general setting of a uniformly smooth Banach space and prove the strong convergence of the process to a common fixed point of the mappings [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII.
Now, more generally and more naturally, using the generalized Bianchi identity [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII.
The ASCII Group provides its 3,000 solution provider members with tools such as leveraged purchasing programs, education, training, knowledge sharing and discounts to survive and grow in the technology market.
As far as inflectional morphology is concerned, nouns are sometimes in the plural ([TEXT NOT REPRODUCIBLE IN ASCII] 'fingers', [TEXT NOT REPRODUCIBLE IN ASCII] 'leaves'), sometimes appear with a possessive personal suffix ([TEXT NOT REPRODUCIBLE IN ASCII] 'his wife', [TEXT NOT REPRODUCIBLE IN ASCII] 'his wife; his mother'), and sometimes in the vocative ([TEXT NOT REPRODUCIBLE IN ASCII] 'mother', [TEXT NOT REPRODUCIBLE IN ASCII] (present-day: [TEXT NOT REPRODUCIBLE IN ASCII.
Equivalently, for any [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII.
We reduce the terms [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII.
Like many of my peers, time is a huge obstacle but the ASCII service just takes that element out of the equation," says Frank Ballatore, owner of The New England Computer Group in Danbury, CT.