Input Devices Flashcards
what is an input device
an input device is a type of hardware that allows us to enter data and instructions into a computer
what are some examples of input devices
- keyboard
- mouse
- touchpad
- scanner
- bar code scanner
- quick reaction ( QR ) code
- web cam
- microphone
what is a keyboard
a keyboard allows users to enter letters, numbers, and symbols
what is a mouse
a mouse allows users to move the pointer on the screen
what is a touchpad
a touchpad allows users to move the on-screen pointer by sliding their fingers across the surface
what is a scanner
a scanner digitizes or converts hard copy documents and photographs into digital form
what is a bar code scanner
a bar code scanner is a handheld or stationary device that reads bar codes
where is a bar code scanner used
in shops when buying an item
what is a QR code
QR codes comprise two-dimensional squares of varying sizes arranged wh=ithin a larger square area
which one can store more information: Bar codes or QR codes?
QR codes
what is a webcam
a webcam can be used to capture photographs and/or videos
what is a microphone
a microphone allows users to record audio
