Paper 1

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Across
  1. 1. A general-purpose register that temporarily stores the results of arithmetic and logic operations.
  2. 3. Systems software designed to help configure, analyse, or maintain a computer, such as a virus checker or disk formatter.
  3. 5. High-speed primary memory that uses transistors arranged as flip-flops and does not require constant refreshing.
  4. 7. A collection of data stored in separate, linked tables that are organised to reduce data redundancy and maintain consistency.
  5. 10. The process of reorganising parts of files on a hard disk so that each file occupies contiguous blocks to improve access times.
  6. 12. An automatic software check to ensure that the data entered into a computer system is reasonable and meets certain criteria.
  7. 14. An IP address that is visible to any device on the internet and allows direct access to the external network.
  8. 17. A register that holds the address of the memory location currently being read from or written to.
  9. 20. A database property that ensures all foreign keys are matched to an appropriate primary key so that no nonexistent data can be referenced.
Down
  1. 2. All the symbols or characters that a computer system can represent, with each being assigned a unique binary number.
  2. 4. A special-purpose register that stores the memory address of the next instruction to be fetched and executed.
  3. 6. A part of a bitmap image file that stores metadata about the image, such as the number of colours, dimensions, and file format.
  4. 8. A type of primary memory that uses transistors and capacitors and requires constant refreshing to retain data.
  5. 9. A combination of hardware and software designed for one specific task, often built into a larger machine like a washing machine or car.
  6. 11. The smallest addressable element or single square of one colour in a bitmapped image.
  7. 13. An electromechanical device that converts electrical energy into mechanical force to cause a physical action in a control system.
  8. 15. A network device that receives packets from devices or the internet and forwards them to their destination using a routing table.
  9. 16. The principle of ensuring the accuracy, completeness, and consistency of data throughout its lifecycle.
  10. 18. The number of bits used to represent each colour in a bitmapped image, determining the range of colours available.
  11. 19. An IP address used for communication within a local network (LAN) that is not visible to devices on the wider internet.