Keypad
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standard. 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 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 arrangement.
standard.]] ]] 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 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 arrangement. ==Keypad technologies== Apart from mechanical keypads, there are a wide range of technologies that can be used as keypads, each with distinctive advantages and disadvantages. These include resistive, capacitive, inductive, piezoelectric, and optical. ==See also== Arrow keys Keyboard (computing) Key rollover Mobile phone Rotary dial Silicone rubber keypad ==References== ==External links== Interfacing Matrix Keypad to 8051 Controller
Text derived from https://en.wikipedia.org/w/index.php?oldid=1340307838 under CC BY-SA 4.0; modifications have been made.