Keypad
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A keypad is a block or pad of buttons set with an arrangement of digits, symbols, or alphabetical letters. Pads mostly containing numbers and used with computers are numeric keypads. Keypads are found
A calculator
1984 flier for projected capacitance keypad
Push-button telephone
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A push-button telephone is a telephone that has buttons or keys for dialing a telephone number, in contrast to a rotary dial used in earlier telephones.
Keypad
…and used with computers are numeric keypads. Keypads are found on devices which require mainly numeric input such as calculators, television remotes, push-button telephones, vending machines, ATMs, point of sale terminals, combination locks, safes, and digital door locks. Many devices follow the E.161 standard for their…
The Western Electric No. 2500, a typical American 12-button phone of the 1970s and early 80s
Gigaset A165 push-button cordless telephone using DECT with a base station
Iskra ETA85 pushbutton telephone with pulse-dialing keypad (Yugoslavia, 1988).
Heemaf 1955 type wall telephone by Philips with DC signaling pushbutton dial (Netherlands, Dec.1962).