Across
- 1. a register that stores the address of the memory location currently being read from or written to
- 3. CPU with four cores
- 5. increasing clock speed beyond recommended settings
- 6. data travels in both directions
- 7. on-screen keyboard using touch input
- 10. print head moves in x, y, z directions
- 11. storage directly accessible by CPU (RAM & ROM)
- 13. CPU unit consisting of ALU, control unit, and registers
- 14. complete set of machine code instructions for a processor
- 17. the component of the CPU that carries out all arithmetic and logical operations
- 21. offsite storage on remote servers
- 22. cycle clock speeds measured in GHz; represents system clock frequency (e.g. 3.5 GHz = 3.5 billion cycles per second)
- 24. temporary general-purpose register that stores numerical values at any part of a given operation
- 31. hardware and software designed for a specific function
- 32. touch screen detects touch via contact between layers
- 33. memory that can only be read
- 34. firmware programs used to initialise a computer during boot-up
- 35. temporary CPU component that holds data or instructions during processing
- 36. converts electrical energy into movement
- 37. location a numbered place in memory where values can be stored
- 38. produces timing signals on the control bus to ensure synchronisation takes place
- 39. automatically assigns IP addresses
- 40. bus carries memory addresses
- 41. fixed IP address
- 43. CPU with two cores
- 45. mouse uses LED to track movement
- 47. memory that can be read and written
- 49. uses lasers (CD, DVD, Blu-ray)
- 50. a label for a memory location used by the CPU to track data
- 51. touch screen detects touch via changes in capacitance
- 52. excessive swapping causing slowdown
- 54. a type of computer architecture which introduced the concept of the stored program in the 1940s
- 55. bus carries data between CPU, memory, and I/O devices
- 56. a register that stores the current instruction being decoded and executed
- 58. inkjet method using heat to eject ink
- 59. uses secondary storage to extend RAM
Down
- 1. a register that stores data that has just been read from memory or data that is about to be written to memory
- 2. touch screen detects touch using IR beams
- 4. the component of a computer’s CPU that ensures synchronisation of data flow and programs throughout the computer by sending out control signals along the control bus system
- 5. emits light using electron movement
- 8. usually a chip made from a semiconductor material which carries out the same tasks as a larger circuit made from individual components
- 9. crystal vibrates to push ink onto paper
- 12. cycle of fetching, decoding, and executing instructions
- 15. hardware enabling network connection
- 16. loses data when power is off
- 18. temporary memory using SRAM to hold frequently used data/instructions to improve CPU performance
- 19. screen that detects touch input
- 20. part of machine code that identifies the operation
- 23. access store (IAS) memory that holds all data and programs needed to be accessed by the control unit
- 25. bus carries control signals from the control unit
- 26. connections between major components carrying data, addresses, or control signals
- 27. data travels in one direction only
- 28. part of machine code that identifies data to be used
- 29. matrix of squares representing data readable by camera
- 30. responsible for the execution or processing of all the instructions and data in a computer
- 42. Address unique hardware identifier
- 43. IP address temporary IP address assigned
- 44. pattern of lines representing data, read using light
- 46. a register that stores the address where the next instruction to be read can be found
- 47. injury caused by repetitive strain
- 48. converts electrical signals into sound
- 53. store secondary storage device (e.g. HDD or SSD) used to store data permanently
- 57. directs data between networks