Secondary Storage

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computer concepts fundamentals

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Magnetism2-psg

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Evolution Of Computers

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Timeline

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Secondary Storage

Uses

Permanent Storage

Used By Loading Files Onto RAM

Non - Volatile

Stores Data Not Currently Being Used By Ram

The Operating System

Saved Files And Documents

Programmes Not Being Used That Are Installed On The Computer

Storage Technologies

Solid State

No Moving Parts

Reliable

Rapid Development

Cheap And Small

Newest

Internal Solid State

USB Memory Sticks

Removable Ussually Called Flash Storage

Optical Storage Media

Less Storage Than Magnetic

CDs and DVDs

Read By Lasers

A laser can edit or read a spining disks, determining if Different Parts Reflect Laser

Magnetic

Vunerable To Damage

Slow To Read Due To Moving Parts

Cheap

Oldest

Tapes

Read By Moving Tape Past Read - Write Head

Hard Disks

Floppy Disks

Read By Moving Head Inside Disk