Why the number alignment in number pad in keyboard/calculator different from the one that of in Telephone?
Question:
keyboard-----------Telephone
7 8 9----------------------1 2 3
4 5 6----------------------4 5 6
1 2 3----------------------7 8 9
I have observed this difference in most cases, but why? Is this because of the different practise followed by the inventor's?.
Answer:
The Touch Tone system or DTMF was developed at Bell Labs in the 1950's in order to allow dialing signals to dial long-distance numbers, potentially over nonwire links such as microwave links or satellites. The Touch Tone system also introduced a standardized keypad layout. After testing 18 different layouts, they eventually chose the one familiar to us today, with 1 in the upper-left and 0 at the bottom. The adding-machine layout, with 1 in the lower-left was also tried, but at that time few people used adding machines, and having the 1 at the "start" (in European language reading order) led to fewer typing errors. In retrospect, many people consider that this was a mistake. With the widespread introduction of computers and bank machines, the phone keyboard has become "oddball", causing mistakes.
WHAT?
I don't know why for sure, but I think it involves a diabolical plan to make me call my ex-girlfriend by accident when ordering pizza.
Who knows?
You go from the bottom in the calculator and the keyboard, whereas you come from the top in a phone - sometimes holding the receiver in the same hand that dials.
because you can' compute the numbers on the telephone, and a telephone is a talaphone, keybord is keybord.
1. Why do you care?
2. This is a joke or riddle??
3. Because god wanted it to be that way
is this a joke
its stupid aintit
What the flip
More Questions & Answers...