dated November 18, 1963, the telecommunications company bell telephone introduced the first tuch tone dial phone to the townspeople of carnegie and greensburg in pennsylvania, as. the western 1500 aircraft introduced only has a number 10. lately, launched a model that has 12 buttons with an asterisk (*) and a fence (#).

phone calls are made by megirim pulsa electricity to dial the destination number. on the previous telephone model, this is done by rotating the dial (rotary dial). in the 1950s, at & t did an in-depth study and found that calls using the pushbuttons were much faster than dialed numbers. push button works by sending signal through dual tone multi-frequency signaling (dtmf). although it has been introduced since 1963, the telephone by dialing the phone number is still widely used until at least two decades after that.
