| A | B |
|---|
| URL | uniform resource locator, address |
| http | hypertext transfer protocol |
| domain name | identifies web site |
| web server | computer that delivers (serves) web pages |
| www | world wide web |
| hyperlink | built in connections on web page |
| web site | collection of related web pages |
| ISP | internet service provider, supplies connection to web for monthly fee |
| LAN | local area network, connects computers in limited geographical area |
| WAN | wide area network, covers a large geographical area |
| html | hypertext mark-up language |
| GUI | graphical user interface, user friendly screen |
| OS | operating system, set of computer instructions |
| input | allows user to enter data, commands or programs into computer |
| primary input devices | keyboard, mouse |
| memory | any data to beprocessed must be stored here |
| auxiliary memory | secondary storage |
| storage devices | floppy, hard disk, compact disc |
| CPU | central processing unit |
| Control unit | interprets instructions |
| Arthmetic/Logic unit | performs mathematical and logical processes |
| Output devices | makes processed information available for use |
| formatting | preparing disk for reading & writing |
| track | full circle recording band |
| sector | pie-shaped section, breaks tracks into small areas |
| kilobyte | 1000 memory bytes |
| megabyte | 1 million memory bytes |
| gigabyte | 1 billion memory bytes |
| system software | controls operations of computer equipment |
| booting | loading operating system into memory |
| application software | programs that tell computer how to process information |
| network | collection of connected computers |
| Internet | links millions of computers |
| www | contains billions of web pages |
| web browser | software needed to view pages on web |
| Information processing cycle | input, process, output, storage |
| virus | program or peice of code loaded onto your computer without your knowledge |
| supercomputers | fastest, channels power into executing few programs as fast as possible |
| mainframes | uses its power to run many programs concurrently, can support hundreds-thousands of users |
| microcomputers | relatively small, inexpensive computer designed for individual user |
| microprocessor | silicon chip that contains a CPU |
| ARPANET | established in 1969 by US Defense Department |
