Storage Devices and Media

Read Only Memory (ROM)?
Commands designed for read-only purposes, such as the computer boot-up instructions
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Random Access Memory (RAM)?
Holds the data needed by the programs currently in use; data is stored in the memory temporarily and lost when the PC is switched off
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Benefits of RAM?
Bring to a system include greater ability to multi-task, and the ability to run memory intensive applications more smoothly
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Hard Drive?
Stores the operating system software, application software and the user's documents and data files; come in a variety of sizes
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Advantages of hard drive?
Relatively cheap, large capacity storage; fixed inside the system, so not easily misplaces; stores and retrieves data faster than some mediums (CD-ROMS)
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Disadvantages of hard drive?
They can fail and are prone to damage upon impact, leading to lost or corrupt data; not as portable as other storage mediums, due to size, weight and internal location
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CD/DVDs/Blu-ray?
Optical disc storage mediums, read and written to by a laser; faster access than a floppy disk, slower than a hard drive,; used for the distribution of software and other media such as music albums and movies
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Advantages of CD/DVDs/Blu-ray?
Lightweight and easy to carry around; cheap to produce and buy in bulk; widespread compatibility
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Disadvantages of CD/DVDs/Blu-ray?
Easily scratched/damaged, potentially making them unusable; limited storage capacity, particularly CDs
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Zip Drive?
Medium capacity removable disk storage system; disks hold between 100MB and 750MB, and are used for long-term data backup
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Advantages of zip drive?
Sturdy and durable for long-term use
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Disadvantages of zip drive?
Disks are more expensive than CDs or DVDs; not many computers have zip drives, meaning a portable drive is required
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Magnetic Tape/DAT drive?
Uses magnetic tape technology as an external device for large files; typically used for offline, archival data storage; mostly used by organisations to backup vast amounts of data (tapes can store over 800MB)
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Advantages of Magnetic Tape/DAT drive?
Tapes are relatively cheap and provide large capacity storage; sturdy and durable for long-term use
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Disadvantages of Magnetic Tape/DAT drive?
Quite slow at reading and writing data; requires a tape steamer to read and write data
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Memory sticks?
Used for storing and transferring files, and come in many different sizes; usually connected to computers and devices via uSB
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Flash memory cards?
Often used by digital cameras and MP3 players to store the photographs and songs; also inserted into card readers connected/built-in to computers, to allow files to be transferred to and from the cards
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Advantages of memory sticks and cards?
Small, light and easy to carry around; large storage capacity for their size
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Disadvantages of memory sticks and cards?
Very easy to break; data can be lost if you do not properly remove the device from the computer after saving
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Solid State Disks (SSD)
Work the same as a hard drive but uses chip technology instead of disk technology; will eventually replace traditional hard drives as the chip is smaller than the disk
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Advantages of SSD?
Lower failure rate and faster access to storage than traditional hard disk drives; quieter than traditional hard disk drives
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Disadvantages of SSD?
Will remain expensive until they become more commonly used; slower to write to than traditional hard disk drives
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Online Storage?
Works the same as a hard drive and sits on a serve on a website on the Internet; will usually pay a small fee to keep their work saved and kept secure
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Advantages over local storage of online storage?
Large quantities of files can be stored and shared with friends and family
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Disadvantages over local storage of online storage?
Reliance on another company to keep your data secu
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Advantages over local storage of online storage?
Large quantities of files can be stored and shared with friends and family
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Disadvantages over local storage of online storage?
Reliance on another company to keep your data secure
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Other cards in this set

Card 2

Front

Random Access Memory (RAM)?

Back

Holds the data needed by the programs currently in use; data is stored in the memory temporarily and lost when the PC is switched off

Card 3

Front

Benefits of RAM?

Back

Preview of the front of card 3

Card 4

Front

Hard Drive?

Back

Preview of the front of card 4

Card 5

Front

Advantages of hard drive?

Back

Preview of the front of card 5
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