Task 4. Answer the following questions

1. What is a computer? 2. What does an operating system provide? 3. What types of computers do you know? 4. What are the advantages of multimedia? 5. Name some types of devices that can be added externally to a computer? 6. Why are not all computer systems compatible? 7. What is the connection of networks throughout the world called? 8. What do we call downloading (uploading)? 9. What is the structure of the Web? 10. What services does telecommunication provide? 11. How do CD-ROMs function? 12. What is a hard disk used for?

a spreadsheet for calculating mathematical formulae; interlinked documents; to select items from menus; by pressing a button on the mouse; displayed on a monitor screen; to be able to store information; by plugging in an expansion card; to share resources; a system designed to provide access; a vacuum-sealed case; sockets called expansion slots; to add externally to a computer; networks throughout the world.