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6. 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

7. Describe how data is actually stored in ROM and RAM

  • Stored as binary numbers with a pattern of switches in memory
  • Stored as binary numbers with a pattern of switches in memory representing the binary numbers
  • Stored as a pattern of switches representing the binary numbers
  • Stored as binary numbers with a pattern of switches representing the binary

8. 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

9. 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
  • The BIOS and any other permanent programs or data
  • Documents, files, webpages or any other data that are loaded by the user
  • Any software the computer is using

10. 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

11. Disadvantage of storing a program in ROM

  • It is non-volatile so contents are not lost when the power turns off
  • The program can be updated and any data stored on the chip can be changed
  • The program cannot be updated and any data stored on the chip cannot be changed
  • It is volatile so contents are not lost when the power turns off

12. What is stored in RAM?

  • Programs and files
  • Documents and files
  • Programs and data that are currently in use by the CPU
  • Fixed programs and data that are currently in use by the CPU

13. Is RAM volatile or non-volatile?

  • Volatile
  • Non-volatile

14. What does ROM stand for?

  • Random Offset memory
  • Read Often Memory
  • Read Only Memory
  • Random Only Memory

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

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

16. Explain the purpose of RAM in a computer system

  • Process instructions from the CPU
  • Execute instructions
  • Store data and programs that the CPU is using while programs are running
  • Temporarily store instructions and data being used by the CPU

17. What are the functions of the BIOS program?

  • Allow the CPU to access hardware, check hardware, allow the user to change some basic settings, and load OS into ROM
  • Check hardware, allow the user to view and edit basic settings, and load OS into RAM
  • Allow the CPU to access hardware, check hardware, allow the user to view and edit basic settings, and load OS into RAM
  • Allow the CPU to access hardware, allow the user to view and edit basic settings, and load OS into RAM

18. Advantage of storing a program in ROM

  • It is non-volatile so contents are not lost when the power turns off
  • It is volatile so contents are not lost when the power turns off
  • The program cannot be updated and any data stored on the chip cannot be changed
  • The program can be updated and any data stored on the chip can be changed

19. What does RAM stand for?

  • Read Alternative Memory
  • Read Access Memory
  • Random Access Memory
  • Random Alternative Memory

20. What does volatile mean?

  • Contents will be lost when the power turns off
  • Contents will not be lost when the power turns off