The nine minute snooze

I’ve never understood why the snooze button on most alarm clocks delays the alarm for nine minutes. Why not ten? Here’s the explanation. Apparently it’s for simplicity’s sake. Nine minutes means it only needs to check the last digit of the time, saving on circuitry. As an aside, this year marks the 50th birthday of the first snooze alarm clock.

Comments

5 Responses to “The nine minute snooze”

  1. Shanahan on September 14th, 2006 08:00

    If you’d learned your digital signal processing, programmed a D6 or ever baked an EEPROM you’d know that.

    What I can’t understand is how you completely missed the comp-sci boat dude. Do you ever regret not taking that?

  2. Sheila Shields on September 14th, 2006 09:10

    I didn’t read the link that way, it was a marketing move to snooze for less than 10mins.

    That passes Occam’s Razor more naturally than some DSP apocryphal bollox

  3. niknej on September 14th, 2006 21:12

    And what about analogue faced alam clocks – we don’t all have digital ones.

  4. Dan on September 14th, 2006 22:12

    There is similar commentary about the rationale behind it not being ten minutes on analogue clocks in the link above.

  5. Dan on September 15th, 2006 03:13

    As for Shanahan’s comment, nah. I enjoy dabbling in computing stuff, but my degree in Maths is timeless. Computing is more time-specific…

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