Peripherals- devices used for computer input and output
- keyboard- input device
- keyboard informs the computer of every key press
- gives commands to the operating system
- mice are most likely either optical or laser
- two types of mice are wireless and trackball
- monitors-output
- LCD monitor and CRT monitor
- high definition monitors= better resolution
pixel- the smallest colored dot that can be displayed on the screen
- more pixels also mean more detail
- standard resolution= 1280 x 720 pixels (width x height)
- high definition=1920 x 1080 pixels
printers and scanners give computers more value
drives have gone from 3 1/2 in. floppy drive to blu-ray drive
external drives give more storage options
tower cases- include a bay for an optical drive(dvd or blu-ray drive)
- all different drives can be loaded into the same tower case
dream computer requirements
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