Computing

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Across
  1. 2. An electronic circuit, usually a quartz crystal, that generates electronic pulses at fixed time intervals to control the timing of all operations in the processor
  2. 4. A program designed to perform a specific function
  3. 7. This merges information from several channels into one channel.
  4. 10. The name given to system software that is held in ROM.
  5. 11. A signal to a processor to suspend temporarily the current sequence of instructions
  6. 12. The process of sending signals electronically.
  7. 16. A big computer system used for large-scale operations
  8. 18. A _________ controller controls a number of similar peripheral devices such as terminals and links them to the main computer
  9. 20. Data, programs, etc., not forming part of a computer, but used when operating it.
  10. 21. A writing aid enabling the structure of the document to be worked out beforehand and used as a guide when doing the detailed writing
Down
  1. 1. A _________ board is a public teleconferencing system that allows users to read and write messages
  2. 2. An IBM- _________ computer is one which can be used with other IBM hardware.
  3. 3. Groups of bistable devices used to store information in a computer system for high-speed access
  4. 5. Can adjust the space between successive characters to produce a 'best fit’
  5. 6. A combination of electronic devices and conductors that form a conducting path
  6. 8. A sequence of instructions that is repeated until a desired condition is reached
  7. 9. A program or series of programs directed at some generic application (e.g. word processing) that can be tailored by the user to match his individual needs.
  8. 13. A program that manipulates rows and columns of figures, used especially for accounting.
  9. 14. The ________ editor is a systems program that fetches required systems routines and links them to the object module.
  10. 15. Pattern used as a guide for creating letters or characters
  11. 17. An agreement that covers the procedures used to exchange information between co-operating computers.
  12. 19. Used for storing part of the operating system and application software known as ‘firmware’; can only be read; cannot be written to or altered in any way