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Unit 2: Output and Input Devices (Input devices (Example (Digital Cameras,…
Unit 2: Output and Input Devices
Input devices
It captures information and translates it into a form that can be processed and used by other parts of our computer
Example
Pointing devices
Example
Mouse
Trackball
Touchpad
It is mainly used to choose, move the cursor and enter commands. It tends to have USB connectors or PS/2 connectors
Game controller
It is mainly used to play games
Examples
Joysticks
Gaming wheel
Gamepads
Microphones
It is used to input audio
Types of microphones
Headsets
Directional microphones
Desktop microphones
Digital Cameras
Purpose
Download images to a computer
Post pictures to the Web
Produce videos
Resolution is measured in megapixels (MP)
The more expensive the camera, the higher the resolution and better the image quality is
Web Cam
It's a video camera that can be used to take images for uploading to the web. Sometimes it's connected to PC or built-in our laptop
Output devices
It takes information within our computer and present it to us in a form that we can understand
Examples
Monitors
A device used for observing, keeping or checking a continuous record of something
Examples
LED
LCD
CRTs
Printers
Inkjet
Most popular for home use
Makes images by forcing droplets through nozzles
Laser
Used in offices
Forms images using an electrostatic process
Much faster than inkjet
Speaker
It produces computer output as sound. It is common devices in computer systems
Examples
Built-in speaker
Two-device set speakers
Surround sound speakers