Across
- 4. a small, unauthorized program that can damage a computer
- 7. the image that you see on the screen is made of thousands of tiny dots, points or pixels
- 9. a kind of memory used to make a computer work faster
- 10. a self-contained program or piece of software
- 13. the basic software that manages a computer (for example, Windows 10, OS X, Unix, iOS)
- 15. software that operates a PC and does various things, such as writing text (word-processing program), keeping accounts (accounts program) and drawing pictures (graphics program)
- 16. messages sent from one computer to another.
- 17. a program like Firefox or Internet Explorer. You use it to view or browse the Internet.
- 18. International network of computers that you connect to
- 19. abbreviation of "universal serial bus"; a standardized connection for attaching devices to computers etc
Down
- 1. a specific computer record. It could contain data such as text (e.g. essay.doc), or a program such as paint.exe.
- 2. a (small) defect or fault in a program
- 3. The Web is one of the services available on the Internet. It lets you access millions of pages through a system of links
- 5. a system for communicating without wires over a computer network
- 6. a copy of files from a computer's hard disk
- 8. Central Processing Unit. This is a PC's heart or "brains"
- 10. software a program that finds and removes viruses from a computer
- 11. an area that has an available wireless signal for Internet access (usually public)
- 12. a small program that tells a PC how a peripheral works
- 14. Memory is for the temporary storing of information while a computer is being used