Unit 15 vocabulary puzzle

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Across
  1. 5. an emulation of an existing computer system. A computer OS running within another computer’s OS.
  2. 8. the use of an app/device to imitate the behaviour of another program/device; for example, running an OS on a computer which is not normally compatible.
  3. 9. circuit two half adders combined to allow the sum of several binary bits.
  4. 10. electronic circuits with two stable conditions using sequential circuits.
  5. 12. computer that uses multiple instructions multiple data sources
  6. 13. the output from a process which influences the next input value to the process.
  7. 15. computer that uses multiple instructions single data source
  8. 17. circuit in which the output depends on input values produced from previous output values.
  9. 18. virtual machine software that creates and runs virtual machines.
  10. 20. computer that uses single instruction single data source
  11. 21. a Boolean expression containing AND and OR terms.
  12. 22. circuit in which the output depends entirely on the input values.
  13. 23. an operating system that controls the physical hardware.
Down
  1. 1. interconnection between two logic gates which make up a flip-flop.
  2. 2. ordering of binary numbers such that successive numbers differ by one bit value only, for example, 00 01 11 10.
  3. 3. an operating system running on a virtual machine.
  4. 4. the complete set of all the instructions in machine code that can be recognized and executed by a central processing unit.
  5. 6. stands for complex instruction set computer
  6. 7. circuit that carries out binary addition on two bits giving sum and carry.
  7. 11. is to allow several instructions to be processed simultaneously without having to wait for previous instructions to finish.
  8. 14. is a signal that is sent to the processor to request immediate attention
  9. 16. stands for reduced instruction set computer
  10. 17. computer that uses single instruction multiple data sources
  11. 19. a a method used to simplify logic statements and logic circuits – uses Gray codes.