OCR 277 1.1 Systems Architecture

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Across
  1. 4. A CPU with two processors
  2. 5. The main printed circuit board of the computer
  3. 6. A hardware device used to output data that is the result of processing
  4. 8. Software that is stored permanently in a device, such as control programs
  5. 9. A hardware device used to input data into a computer system for processing by the CPU
  6. 11. When the processor cores work on different parts of the same program at the same time
  7. 16. A system which is designed for one particular purpose
  8. 18. A small, high- speed type of memory in the CPU to store frequently used instructions or data
  9. 20. Arithmetic and Logic Unit; the part of the CPU that performs all of the arithmetic and logical functions
  10. 21. The part of the CPU cycle that carries out the instruction
  11. 23. The physical components making up the computer and its peripheral devices
  12. 25. One million hertz; one million instructions can be processed per second
  13. 27. Central Processing Unit - the component of the computer containing the control unit,
  14. 28. Processors on a CPU
  15. 29. A measure of frequency; the number of cycles per second
  16. 32. This is the part of the instruction that tells the CPU what to apply the operation to
  17. 33. The ability of computer systems to act on their own without human input
  18. 35. The register in the CPU that stores the intermediate results of calculations
  19. 36. The set of instructions for a particular processor
Down
  1. 1. The register in the CPU that keeps the address of the next instruction
  2. 2. The part of the CPU cycle that splits an instruction into two parts - the operator and the operand
  3. 3. A CPU with four processors
  4. 7. Memory Data Register; A register that contains data either just in from, or about to depart for, main memory
  5. 10. The electronic device in a computer that controls the timing of signals
  6. 12. A numerical reference to a location in memory used to store data or instructions.
  7. 13. A device (hardware) that is connected to the CPU to provide input, output or storage
  8. 14. The frequency at which a CPU operates, which determines how many instructions it can execute per second
  9. 15. One billion hertz; one billion instructions can be processed per second
  10. 17. The internal, logical structure and organisation of the computer hardware; e.g. Von Neumann and Harvard
  11. 19. This is the process of fetching the instructions from memory, decoding them and then executing them so that the CPU performs continuously
  12. 22. The part of the CPU cycle that fetches an instruction from main memory
  13. 24. A program which is called by a peripheral manager to operate a device such as a printer, monitor or mouse
  14. 26. A small application that performs one specific task
  15. 30. Low capacity, fast access, storage locations, within the CPU, which can be general or special purpose
  16. 31. Memory Address Register; A register that stores the memory location that will be accessed next
  17. 34. A bundle of wires carrying data from one component to another