The Internet A Wide Area Network across the world The network of networks –Lots of smaller networks joined together.

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Presentation transcript:

The Internet A Wide Area Network across the world The network of networks –Lots of smaller networks joined together

Internet Services World Wide Web (www or just web) –Used for browsing or searching –Communication & exchange of information File transfer –Sending & receiving large amounts of information

File download Freeware –Totally free to download, but can’t be sold on Shareware –Try the software first, pay if you like it (based on trust) Commercial –You pay by credit or debit card on a secure site, then you download the software and a code number to run it You can download files, either data files or program files. Data files are loaded and used by another program (e.g. you may download a form and fill it in using the program ‘Word’) Program files actually do something on the computer, they are a list of instructions to make the computer do something. Types of programs you can obtain

Accessing the Internet Dial-Up –Uses a modem and an ordinary phone line to dial up the number of your ISP that connects you to the internet. Broadband –Uses either a digital subscriber line (DSL) or a cable modem Modem –The telephone line doesn’t understand binary –A modem is needed to translate for the computer

World Wide Web Information is stored in web pages on web sites These pages can be viewed in a browser They are found by an address such as: – – Hyper links are used to ‘travel’ around the web

The Web - HTML Hyper Text Mark-up Language The language used to write web pages Title of the document The body of the document

Search Engine Special web site to help you find information A big database! Some of the main search engines: