1.1 Flashcards
Common input devices
common input devices
- keyboards
2.mouse
3.scanner
4.sensors
5.microphone
6.barcode reader
What is the use of input devices?
why do we need input devices
An input device allow data such as text or images to be entered into a computer system
Keyboard uses
used to enter characters and functions into the computer system
Mouse uses
They are used to move the cursor on the screen, select objects and click on buttons.
Scanner
A scanner is a device that captures images from photographic prints, posters, magazine pages and similar sources for computer editing and display.
graphics tablet
A device by which pictures, graphs, or maps are put into a computer in a manner similar to drawing.
sensors
Detect and respond to some type of input from physical environment
microphone
Translates sound vibrates in the air into electronic signals
OUTPUT DEVICES
WHAT ARE THEY USED FOR
they receive the processed data from the computer and transform it in the form of audio, video, or physical reproductions.
MONITOR
a device used for observing, checking, or keeping a continuous record of something
PRINTER
A device that accepts text and graphics output from a computer
Braille terminal
braille displays typically require a screen reader to send and control the output from the screen to the braille display
communication devices
what are they used for
used to create or link together networks allowing data to be sent to different computer systems
Hub
recieves data packets from a connected devies and transfers a copy to all connected nodes
router
used to transfer data packets between networks
