1.2 Memory

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1. Explain the purpose of RAM in a computer system

  • Execute instructions
  • Temporarily store instructions and data being used by the CPU
  • Store data and programs that the CPU is using while programs are running
  • Process instructions from the CPU
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2. 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.
  • Non-volatile (permanent) storage where all data is stored when not in use.
  • There is no direct connection to the CPU
  • It is read/write storage.

3. 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
  • To store data and programs that the CPU is using while programs are running

4. What is firmware?

  • Software to control hardware
  • An example of volatile software
  • Hardware to control software
  • An example of volatile hardware

5. Why would an embedded computer need RAM?

  • To store data that needs to be changed
  • So the contents are not lost when the power is turned off and so the program cannot be altered

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