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Author Topic: someone explain this to me.  (Read 1048 times)

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Offline FinancialWar

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someone explain this to me.
« on: Fri, 23 March 2012, 22:44:21 »
why are the number position on a keyboard's numpad opposite to the number positions on phones?

On numpad, 1 2 3 are on the bottom however 123 are on the top on the phone.
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Offline IvanIvanovich

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someone explain this to me.
« Reply #1 on: Fri, 23 March 2012, 22:59:47 »
Numpads on keyboards were inherited from adding machines layout going back to the 1880's at least. Telephone keypad was arranged that way due to the row / column frequency combinations the DTMF system was set up for.
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