What are hard disk drives (HDD), and what are they made up of?
HDDs are traditional internal storage that is made up of a stack of magnetised metal disks
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What are solid state drives (SSD)?
Fast and reliable secondary storage with no moving parts
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What are optical discs?
Robust secondary storage (CDs/DVDs)
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What does the operating system (OS) do?
It communicates with internal and external hardware, provide a user interface, provides platforms for different applications to run and allows the computer to multitask
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What does the operating system (OS) use to communicate with hardware
Device driver software
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What is a back-up?
A copy of a computer system's files and settings stored externally
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What does compression software do?
Reduces file size so it takes up less storage
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What is encryption software?
Software the scrambles (encrypts) data to stop third parties from accessing it
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What is open source software?
Software where the source code is made freely available so it can legally be modified by users
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What is proprietary software?
Software where only the complied code is released so the source code cannot be edited by users
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