Keypads
- Thread starter notb665
- Start date
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What might explain the telephone keypad layout is that on the dial phones the numbers from number2 were also letters of the alphabet.
It would be a bit awkward if the digital keypads were numbered from the bottom because the letters would be out of order.
You would have something like:
pqrs--tuv--wxyz
ghi---jkl---mno
....---abc--def
It could have an adverse effect on all these sprogs who have difficulty spelling in text messages even now.
dave
It would be a bit awkward if the digital keypads were numbered from the bottom because the letters would be out of order.
You would have something like:
pqrs--tuv--wxyz
ghi---jkl---mno
....---abc--def
It could have an adverse effect on all these sprogs who have difficulty spelling in text messages even now.
dave
OK it was simple up to now,
In Sweden ( I think ) phone dials have number in the opposite direction to the UK dial. This is a headache for engineers where the number is the inverse of the number of pulses sent.
Another country has 0123456789 where 0 send one pulse, 1 sends 2 pulses.
The introduction of DTMF ( Dual Tone Multi Frequency ) dialing did rationalise things a lot. No longer did 10 from the phone mean the number zero.
In Sweden ( I think ) phone dials have number in the opposite direction to the UK dial. This is a headache for engineers where the number is the inverse of the number of pulses sent.
Another country has 0123456789 where 0 send one pulse, 1 sends 2 pulses.
The introduction of DTMF ( Dual Tone Multi Frequency ) dialing did rationalise things a lot. No longer did 10 from the phone mean the number zero.
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There were easier ways.
A fellow pupil was convinced that "tapping out" from his parents phone would enable him to make calls that would not be charged. No one told him otherwise. Until the bill arrived and his parents got "a little bit angry".
