1.2 Memory

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1. How could increasing RAM increase what the OS can store?

  • It can store more programs, bigger programs, more files and bigger files
  • It can store more data, bigger data, more files and bigger files
  • It can store more programs, bigger programs, more data and bigger data
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2. Explain why programs do not run directly from secondary storage

  • It is too small to store all the programs the CPU needs to run
  • It is too slow for programs to run directly by the CPU
  • It is too expensive
  • Secondary storage can be removed from the computer

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. Explain why an embedded computer must store its program in ROM

  • Because the contents need to be able to be altered
  • So the contents are not lost when the power is turned off and so the program cannot be altered
  • Because it is a dedicated computer system so it has a specific task
  • So the contents are not lost when they are being altered

5. What is meant by the term primary storage?

  • There is no direct connection to the CPU
  • 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.
  • It is read/write storage.
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