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  2. Blinking twelve problem - Wikipedia

    en.wikipedia.org/wiki/Blinking_twelve_problem

    The clock could be set by using a combination of buttons provided on the VCR in a specific sequence that was found complicated by most users. As a result, VCR users were known to seldom set the time on the VCR clock. This resulted in the default time of '12:00' blinking on the VCR display at all times of the day, which is the origin of this term.

  3. Light effects on circadian rhythm - Wikipedia

    en.wikipedia.org/wiki/Light_effects_on_circadian...

    The time of day at which people are shown a light source that produces visual discomfort is not perceived evenly. As the day progress, people tend to become more tolerant to the same levels of discomfort glare (i.e., people are more sensitive to discomfort glare in the morning compared to later in the day.)

  4. Jiffy (time) - Wikipedia

    en.wikipedia.org/wiki/Jiffy_(time)

    The earliest technical usage for jiffy was defined by Gilbert Newton Lewis (1875–1946). He proposed in 1926 a unit of time called the "jiffy" which was equal to the time it takes light to travel one centimeter in vacuum (approximately 33.3564 picoseconds). [5]

  5. Ready to spring forward for time change 2024? When clocks ...

    www.aol.com/ready-spring-forward-time-change...

    Unless efforts to make daylight saving time permanent succeed, daylight saving time will end for the year at 2 a.m. on Sunday, Nov. 3. This will mean setting your clocks back an hour and gaining ...

  6. Memory timings - Wikipedia

    en.wikipedia.org/wiki/Memory_timings

    The time to read the first bit of memory from a DRAM without an active row is T RCD + CL. Row Precharge Time T RP: The minimum number of clock cycles required between issuing the precharge command and opening the next row. The time to read the first bit of memory from a DRAM with the wrong row open is T RP + T RCD + CL. Row Active Time T RAS

  7. Time clock - Wikipedia

    en.wikipedia.org/wiki/Time_clock

    A time clock, sometimes known as a clock card machine, punch clock, or time recorder, is a device that records start and end times for hourly employees ...

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