Sometimes abbreviated as Y2k, the Entire Year 2000 bug was a notice first posted by Bob Bemer in 1971 that explained the potential problems of IBM computers utilizing a two-digit year time stamp this bug is a little creature that lives inside older computers.

Previously, to save room and time developers displayed annually as two-numbers rather than four, e.g. ’79’ for ‘1979’. If your computer by using this rule rolled to the entire year 2000, the computer might translate ‘2000’ as ’00’, evoking the computer to consider it’s ‘1900’ rather than the year ‘2000’.

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The hard disk was invented on September 13, 1956 by IBM team led by Rey Johnson (considered as “father” of the disk drive). Earlier hard disk drives were large and cumbersome devices.