computer 2.doc

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Plant Biology
PBIO 004
Nicholas J.Gotelli

Definitions and other notes picture 1.jpg Go to: For examples of input, processing, storage, and output devices Use Control + F to find definitions Definitions: Lan- Local Area Network Wan- Wide Area Network TCP/IP- Transmission Control Protocol/ Internet Protocol CPU - Central Processing Unit HTML - Hypertext Markup Language Network: Two or more devices that can communicate with each other Internet: A global network that links together other networks Internet Service Provider (ISP)- A company that provides access to the internet for a fee World Wide Web (WWW)- A global collection of web pages circulated on the internet Web page: A document that contains text and multimedia content Web Browser- A software program used to view web pages Website- A collection of web pages for one organization or individual Web server: where all of the web pages and resources that make a website work are stored Computer: A computer is an electric device operating under the control of instructions stored in its own memory Computers: Accept input (data) - raw facts Processes (data) Provides output (information) - data that has been processed Allows storage for future use System Software (Tell hardware what to do) Operating Systems Utility Programs Excel Applications (Allows users to complete a task) Photoshop Word Communications (Allows users to communicate) Web Browser Networking eCommerce Electronic Commerce Industry where the buying and selling of products or services is conducted over electronic systems such as the internet and or other computer networks Examples Electronic Funds Transfer Internet Marketing Mobile Commerce HTML HyperText Markup Language Main markup language for creating web pages Written in the form of HTML elements Consists of tags enclosed in angle brackets Purpose of the web browser is to read HTML documents and change them into visible or audible pages Building blocks of all websites HTTP HyperText Transfer Protocol An application protocol for distributed, collaborative, hypermedia systems. Structured text that uses logical links (hyperlinks) between nodes containing text Foundation of data communication for the World Wide Web TCP Transmission Control Protocol Provides communication service at an intermediate level between an application program and the Internet Protocol Web Browsers use TCP when they connect to servers on the World Wide Web, and it is used to deliver email and transfer files from one location to another Example When an application program desires to send a large chunk of data across the Internet using IP, instead of breaking
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