View your list of saved words. (You can log in using Facebook.)
Potential problem in computers and computer networks at the beginning of the year 2000. Until the 1990s, most computer programs used only the last two digits to designate the year, the first two digits being fixed at 19. As the year 2000 approached, many programs had to be partly rewritten or replaced to prevent interpretation of 00 as 1900 rather than 2000. It was feared that such a misreading would lead to software and hardware failures in computers used in such important areas as banking, utilities systems, government records, and so on, with the potential for widespread chaos on and following Jan. 1, 2000. Up to $200 billion may have been spent (half in the U.S.) to upgrade computers and application programs to be Y2K-compliant. Despite international alarm, few major failures occurred, partly because these measures were effective and partly because the likely incidence of failure was exaggerated.
Variants of Y2K BUG
Y2K bug or Year 2000 bug or millennium bug
This entry comes from Encyclopædia Britannica Concise. For the full entry on Y2K bug, visit Britannica.com.
Seen & Heard
What made you look up Y2K bug? Please tell us what you were reading, watching or discussing that led you here.