Alphanumeric Keyboard
A very common, general purpose, input device that allows text (abc…), numbers (123…) and symbols (%$@...) to be entered into a computer.
A keyboard is simply a set of buttons. Each button has a symbol assigned.
A keyboard is simply a set of buttons. Each button has a symbol assigned.
![Stacks Image 1109](files/stacks_image_1109.png)
Numeric Keypad
A small keyboard that only has numbers.
Used to enter numeric data into computers such as those in ATMs.
Most computer keyboards have a numeric keypad on the right side, and most mobile phones (there are also computers) have a one for entering phone numbers, etc.
Used to enter numeric data into computers such as those in ATMs.
Most computer keyboards have a numeric keypad on the right side, and most mobile phones (there are also computers) have a one for entering phone numbers, etc.
![Stacks Image 1123](files/stacks_image_1123.png)
PIN Pad
This is a device with a numeric keypad used to enter a person’s Personal Identity Number (PIN) e.g. when paying with a credit card.
PIN pads are also found on electronic door locks – you enter a PIN to unlock the door.
PIN pads are also found on electronic door locks – you enter a PIN to unlock the door.
![Stacks Image 1137](files/stacks_image_1137.png)