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Why are the numbers on phone keypads arranged differently from those on computer keyboards?

On phone keypads, the numbers are arranged:

123

456

789

*0#

On a computer keyboard or calculator, they are arranged

789

456

123

0.

Why the difference?

2 Answers

Relevance
  • ?
    Lv 7
    8 years ago

    Different ideas by different designers.

    Personal preferences.

    Who knows?

    Typewriter keyboards were originally made

    with the letters in all sorts of different layouts.

    Some had the alphabet in its normal order.

    The "QWERTY" arrangement became sufficiently popular to become standardized,

    even though it makes very little sense from a logical point of view.

    Telephones need the * and # buttons for certain functions,

    so they had to be put somewhere.

    >> Some touchtone keypads have a fourth column,

    with either A, B, C, and D or FO, F, I, and P on the buttons.

    See the Wikipedia article "Dual-tone multi-frequency signaling".

  • Anonymous
    5 years ago

    I don't know exactly why, but it seems that if you use any device thats a dedicated calculator, the numbers are on the bottom. I have a calculator with the paper that prints out and the numbers are on the bottom. I've seen accountants use the paper calculators and can add pages of numbers and never look at the display.

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