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Itgs Computer hardware
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Computer Hardware
Description
Mind Map on Computer Hardware, created by James Hawksley on 06/10/2015.
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Mind Map by
James Hawksley
, updated more than 1 year ago
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Created by
James Hawksley
almost 10 years ago
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3
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Resource summary
Computer Hardware
Devices
Input
Output
Hybrid
Assistive Technology
Secondary Storage
Purpose
Non-volatile device that holds data until it is deleted or overwritten.
Secondary storage is about two orders of magnitude cheaper than primary storage.
Types
Magnetic
Examples
Magnetic tape
Floppy Disk
Hard Disk Drives
How it works
It is coated with iron oxide.
This oxide is a ferromagnetic material.
As it is a ferromagnetic material, meaning that if you expose it to a magnetic field it becomes permanently magnetized.
Optical
How it works
The spiral bumps on a CD starts in the center. CD tracks are so small that they have to be measured in microns which are millionths
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3 comments
Joshua Ashall-Smith
almost 10 years ago
Hmm... get aids buddy.
Hmm... get aids buddy.
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Eliot Hawkins
almost 10 years ago
looking great m8
looking great m8
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Silly Goose
almost 10 years ago
(edited)
this is bad But i Still use it #hard
this is bad But i Still use it #hard
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