slovodefinícia
bcdic
(vera)
BCDIC
Binary Coded Decimal Interchange Code
podobné slovodefinícia
EBCDIC
(gcide)
EBCDIC \EBCDIC\ ([e^]b"s[e^]*d[i^]k`), n. [acronym from Extended
Binary Coded Decimal Interchange Code.] (Computers)
a 8-bit code for representing alphanumerical information in a
digital information storage medium. It was used expecially on
IBM mainframes, and differed substantially from the ASCII
code. [acronym]
[PJC]
ebcdic
(foldoc)
Extended Binary Coded Decimal Interchange Code
EBCDIC

/eb's*-dik/, /eb'see`dik/, /eb'k*-dik/,
/ee`bik'dik`/, /*-bik'dik`/ (EBCDIC) A proprietary 8-bit
character set used on IBM dinosaurs, the AS/400, and
e-Server.

EBCDIC is an extension to 8 bits of BCDIC (Binary Coded
Decimal Interchange Code), an earlier 6-bit character set used
on IBM computers. EBCDIC was [first?] used on the successful
System/360, anounced on 1964-04-07, and survived for many
years despite the almost universal adoption of ASCII
elsewhere. Was this concern for backward compatibility or,
as many believe, a marketing strategy to lock in IBM
customers?

IBM created 57 national EBCDIC character sets and an
International Reference Version (IRV) based on ISO 646 (and
hence ASCII compatible). Documentation on these was not
easily accessible making international exchange of data even
between IBM mainframes a tricky task.

US EBCDIC uses more or less the same characters as ASCII,
but different code points. It has non-contiguous letter
sequences, some ASCII characters do not exist in EBCDIC
(e.g. square brackets), and EBCDIC has some (cent sign,
not sign) not in ASCII. As a consequence, the translation
between ASCII and EBCDIC was never officially completely
defined. Users defined one translation which resulted in a
so-called de-facto EBCDIC containing all the characters of
ASCII, that all ASCII-related programs use.

Some printers, telex machines, and even electronic cash
registers can speak EBCDIC, but only so they can converse with
IBM mainframes.

For an in-depth discussion of character code sets, and full
translation tables, see {Guidelines on 8-bit character codes
(ftp://ftp.ulg.ac.be/pub/docs/iso8859/iso8859.networking)}.

{A history of character codes
(http://tronweb.super-nova.co.jp/characcodehist.html)}.

(2002-03-03)
ebcdic
(jargon)
EBCDIC
/eb's@·dik/, /eb´see`dik/, /eb´k@·dik/, n.

[abbreviation, Extended Binary Coded Decimal Interchange Code] An alleged
character set used on IBM dinosaurs. It exists in at least six mutually
incompatible versions, all featuring such delights as non-contiguous letter
sequences and the absence of several ASCII punctuation characters fairly
important for modern computer languages (exactly which characters are
absent varies according to which version of EBCDIC you're looking at). IBM
adapted EBCDIC from punched card code in the early 1960s and promulgated
it as a customer-control tactic (see connector conspiracy), spurning the
already established ASCII standard. Today, IBM claims to be an open-systems
company, but IBM's own description of the EBCDIC variants and how to
convert between them is still internally classified top-secret,
burn-before-reading. Hackers blanch at the very name of EBCDIC and consider
it a manifestation of purest evil. See also fear and loathing.
ebcdic
(vera)
EBCDIC
Extended Binary-Coded Decimal Interchange Code

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