1.2 Memory

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What is meant by the term primary storage?
It is directly connected to the CPU and it is fast enough for programs to be run directly from it.
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What does RAM stand for?
Random Access Memory
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What does ROM stand for?
Read Only Memory
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What is stored in RAM?
Programs and data that are currently in use by the CPU
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What does volatile mean?
Contents will be lost when the power turns off
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Is RAM volatile or non-volatile?
Volatile
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Is ROM volatile or non-volatile?
Non-volatile
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Describe how data is actually stored in ROM and RAM
Stored as binary numbers with a pattern of switches in memory representing the binary numbers
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Explain why programs do not run directly from secondary storage
It is too slow for programs to run directly by the CPU
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Explain why an embedded computer must store its program in ROM
So the contents are not lost when the power is turned off and so the program cannot be altered
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What is stored in RAM when a computer system is in use?
The OS (and any files it is using), any programs that are loaded by the user and any data loaded by the user
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Explain the purpose of RAM in a computer system
Store data and programs that the CPU is using while programs are running
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What is firmware?
Software to control hardware
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How could increasing RAM increase what the OS can store?
It can store more programs, bigger programs, more files and bigger files
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Explain the purpose of ROM in a computer system
To store the programs and data needed to run a computer when there is no secondary storage so data is not lost when the power is turned off
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Why would an embedded computer need RAM?
To store data that needs to be changed
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Other cards in this set

Card 2

Front

What does RAM stand for?

Back

Random Access Memory

Card 3

Front

What does ROM stand for?

Back

Preview of the front of card 3

Card 4

Front

What is stored in RAM?

Back

Preview of the front of card 4

Card 5

Front

What does volatile mean?

Back

Preview of the front of card 5
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