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4 definitions found
From The Collaborative International Dictionary of English v.0.48 :

  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]

From V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016) :

         Extended Binary-Coded Decimal Interchange Code

From The Jargon File (version 4.4.7, 29 Dec 2003) :

   /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.

From The Free On-line Dictionary of Computing (30 December 2018) :

  Extended Binary Coded Decimal Interchange Code
      /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
     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
     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
     square+brackets),+and+EBCDIC+has+some+({cent+sign">(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
     A history of character codes

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