This was recognized when the later COS-310 operating system was developed, and dates were recorded differently. The Digital Equipment Corporation OS/8 operating system for the PDP-8 computer used only three bits for the year, representing the years 1970 to 1977.
There were numerous problems and crashes related to this bug while an alternative format was developed. On 4 January 1975, the 12-bit field that had been used for dates in the DECsystem-10 operating systems overflowed. The most well-known consequence of bugs of this type is the Y2K problem, but many other milestone dates or times exist that have caused or will cause problems depending on various programming deficiencies. These are most commonly manifestations of arithmetic overflow, but can also be the result of other issues. In computer science, time formatting and storage bugs are a class of software bugs that cause errors in time and date calculation or display.
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