Across
- 2. a machine that makes copies of documents, etc. by photographing them
- 3. the part of a computer where information is stored; the amount of space in a computer for storing information
- 6. a piece of equipment worn over or in the ears that makes it possible to listen to music, the radio, etc. without other people hearing it
- 9. a system that cools and dries the air in a building or car
- 11. the machinery and electronic parts of a computer system
- 13. a small round piece of thin plastic that you put on your eye to help you see better
- 17. any of the tubes that carry blood from all parts of the body towards the heart
- 18. a sudden failure of a machine or system, especially of a computer or computer system
- 19. able to be added to a computer system so that it can do more t
- 20. a device in a wall that you put a plug into in order to connect electrical equipment to the power supply of a building
Down
- 1. a computer program that searches the Internet for information, especially by looking for documents containing a particular word or group of words
- 4. a machine that you connect to your telephone to answer your calls and record any message left by the person calling
- 5. the flat surface at the front of a television, computer, or other electronic device, on which you see pictures or information
- 7. an object or a piece of equipment that has been designed to do a particular job
- 8. the use of living cells and bacteria in industrial and scientific processes
- 10. a video camera that records pictures and sound and that can be carried around
- 12. the branch of science and technology that studies electric currents in electronic equipment
- 14. a collection of cells that form the different parts of humans, animals and plants
- 15. a piece of equipment for loading a battery with electricity
- 16. moving stairs that carry people between different floors of a large building