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2 definitions found
 for year 2000 bug
From The Collaborative International Dictionary of English v.0.48 :

  millennium bug \mil*len"ni*um bug`\ (m[i^]l*l[e^]n"n[i^]*[u^]m
     b[u^]g`), n. (Computers)
     An error in the coding of certain computer programs which
     store the year component of the date as two digits, assuming
     that the first two digits are 19, rather than as a complete
     number of four digits; when such programs are used after
     January 1, 2000, the date may be misinterpreted, causing
     serious errors or total failure of the program; -- called
     also year 2000 bug, year 2000 problem and Y2K bug.
  
     Note: In the several years leading up to the year 2000, large
           corporations and other users of computers in total
           spent many billions of dollars correcting this error in
           the programs they use.
           [PJC]

From The Collaborative International Dictionary of English v.0.48 :

  year 2000 bug \year 2000 bug\, year 2000 problem \year 2000
  problem\, n. (Computers)
     an error in the coding of certain computer programs in which
     the year portion of dates was represented by only two decimal
     digits, assuming that the first two digits are "19". In such
     a program the the year 1975 is represented as "75". This was
     a common practise in computer programming even into the
     1990's, as many programmers failed to consider that their
     programs would be used after the year 1999. Thus, with such a
     program, a person born in 2000 would be considered as 101
     years old in 2001; many different serious problems, as
     various as the programs, could be caused by such an error.
  
     Note: In 1998 many programs with the year 2000 bug were still
           not corrected, and it is not clear how many programs
           will retain the bug when the year 2000 arrives. Tune in
           then.
  
     Syn: millemium bug, Y2K bug, Y2K problem. [PJC]

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