Why do computers need primary storage?
For any data that needs to be accessed quickly
What is included in primary storage?
Start-up instructions
Operating system
Programs that are running
What does RAM stand for?
Random Access Memory
What does volatile mean?
Needs power to maintain the memory. If power turned off it loses its contents.
What does non-volatile mean?
Does not require power to maintain the memory. If power turned off it retains it contents when switched back on.
What does RAM store?
Currently open data and the operating system
Features of RAM
Can be accessed quickly
Can be read from or written to
Also known as main memory
What does ROM stand for?
Read-Only Memory
ROM and RAM are either volatile or non-volatile
RAM - Volatile
ROM - Non-Volatile
What storage does ROM provide?
Data and storage needed to start up computer (Boot up sequence) and the BIOS
Features of ROM
Read only (cannot be overwritten)
Contents written by manufacture
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1.1 Systems Architecture25
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1.2 Memory and Storage26
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1.3 Networks Final93
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1.5 System Software20
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1.4 Network Security21
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IT TA1,TA2,TA322
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1.36
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Client-server and peer-to-peer networks8
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Architecture of the CPU18
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Primary Storage12
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CPU performance (Clock, Cache, Cores)6
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Embedded Systems5
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issues8
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Legislation3
