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Description
Flashcards by Malachy Moran-Tun, updated more than 1 year ago
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Created by Malachy Moran-Tun
about 3 years ago
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| Question | Answer |
| What is Magnetic Storage? | > Type of secondary storage (non-volatile) > Read/write head moves across the surface of a spinning disk / tape > Head magnetises / demagnetises a section of the disk / tape > Magnetised / demagnetised parts represent binary data |
| What are some Examples of Magnetic Storage? | > Hard Disk Drive (HDD) > Tapes (VHS, Cassettes etc.) |
| What are the Advantages and Disadvantages of Magnetic Storage? | > Cheap > High Capacity --------------------- > Easily broken / damaged (non-durable) > Not reliable - magnets can erase data |
| What is Optical Storage? | > Type of secondary storage (non-volatile) > Laser scans the surface of the disc, made from metal and plastic > Laser marks hollows and pits on tracks on the disk > Hollows and pits represent binary data |
| What are some Examples of Optical Storage? | > CDs > DVDs > Blu-Rays |
| What are the Advantages and Disadvantages of Magnetic Storage? | > Relatively Cheap > Extremely Portable --------------------- > Limited (not low) Capacity > Easily Damaged / Scratched (not durable) |
| What is Solid State Storage? | > Type of secondary storage (non-volatile) > Type of flash memory > Transistors / switches represent binary data > No moving parts |
| What are some Examples of Solid State Storage? | > USB Drive > Solid State Drive (SSD) > SD Card |
| What are the Advantages and Disadvantages of Solid State Storage? | > Extremely High Transfer Speeds > Durable and Reliable > Portable --------------------- > High Cost |
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