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14 Cards in this Set
- Front
- Back
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HDD |
Hard disk drive. Magnetic storage |
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SSD |
Solid state drive. Flash storage |
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Magnetic storage |
- HDD - Moving parts make it susceptible to damage when moved - Physical size limitations - Cheaper per GB than flash - Largest storage medium |
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Flash storage |
- SSD, USB stick, SD card - No moving parts, so quieter and more durable - Lower power consumption - Faster read/write times |
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Optical storage |
- CD, DVD, Blu-ray - Read and written to using a laser making pits and lands on a reflective surface - Relatively robust - Low cost per MB - Light and portable |
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RAM |
- Random access memory - Primary memory - Faster read/write time than secondary storage - Volatile - Holds software currently in use |
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ROM |
- Read only memory - Non-volatile - Quick to start - Cannot be written to - Stores boot loader |
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Volatile |
Loses its contents when powered off, ie RAM |
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Virtual storage |
- Storage that appears to be local but is actually physically stored elsewhere |
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Virtual storage benefits |
- Backups automatically saved - Data can be accessed anywhere with an internet connection - Data is easily shared and collaboratively worked on |
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Virtual storage drawbacks |
- Internet connection required - Potential privacy issues as you're trusting a third party - Reliant on company's servers to be working |
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Specialist input devices |
- Foot mouse - Eye tracker - Microphone - Puff/suck switch |
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Input devices |
- Keyboard - Scanner - Webcam - Microphone - Mouse - Sensor |
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Output devices |
- Monitor - Printer - Speakers - Headphones - Projector |
