Computer technology

4. a device for downloading and reading ebooks, developed by Amazon.com
5. a panel of keys that operate a computer
8. a piece of electrical equipment through which recorded or broadcast sound can be heard
10. the address of a web page on the world wide web
12. mobile device that combines cellular and mobile computing functions into one unit
13. a small image or picture on a computer screen that is a symbol for folders, disks, peripherals, programs etc
15. unwanted e-mail
17. a small handheld device which is moved across a mat or flat surface to move the cursor on a computer screen
19. the mechanical and electronic parts of a computer, not the software
21. equipment for converting paper documents to electronic documents that can be used by a computer
24. a machine for printing text or pictures
26. a surface for placing and moving a computer mouse
27. an operating system used by the majority of PCs
29. Optical Character Recognition

1. an area that has an available wireless signal for Internet access (usually public)
2. a sub-division of a computer's hard disk into which you put files
3. a tablet computer created by Apple
6. the number of dots or pixels per inch (sometimes per centimetre) used to create the screen image
7. a small, unauthorized program that can damage a computer
9. mouse arrow
11. a set of headphones, typically with a microphone attached
13. a tablet computer created by Apple
14. central processing unit
16. temporary storing of information while a computer is being used
18. local area network
20. a video camera connected to a computer, allowing its images to be seen by internet users
22. a notebook computer; a laptop computer; a folding, portable computer
23. red green blue
25. a self-contained program or piece of software
28. a small program that tells a PC how a peripheral works