Many consumer alarm clocks have a snooze button that is calibrated for 9 minutes. it sounds like an odd decision, isn't it? Many people would think a 10-minute snooze interval would make more sense. So were the designers asleep? Why 9 minutes?
By setting the snooze time to 9 minutes, the alarm clock only needs to watch the last digit of the time. Whether implemented by physical circuitry or software, it is easier to manipulate just the terminal digit.
By setting the snooze time to 9 minutes, the alarm clock only needs to watch the last digit of the time. Whether implemented by physical circuitry or software, it is easier to manipulate just the terminal digit.
ReplyDelete