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Computer Concepts Unit A PPT Lecture
- 1. Computer Concepts – Illustrated 8 th edition Unit A: Computer and Internet Basics
- 2. Objectives Define computers Explore how computers work Categorize computers Examine personal computers Introduce software Computer Concepts – Illustrated 8th Edition
- 3. Objectives (continued) Introduce the Internet and the Web Understand email basics Computer Concepts – Illustrated 8th Edition
- 4. Defining Computers Computer An electronic device that: Accepts input Processes data Stores data Produces output Uses instructions in stored programs Personal computer (PC) Computer Concepts – Illustrated 8th Edition
- 5. Defining Computers (continued) Computer system includes: Hardware Electronic and mechanical parts of the computer Peripheral devices Hardware that can be added to a computer system to expand what a computer can do Software Computer program that tells the computer how to perform tasks Computer Concepts – Illustrated 8th Edition
- 6. Computer Concepts – Illustrated 8th Edition Figure A-1: A basic computer system
- 7. Defining Computers (continued) Input devices: keyboard, mouse, etc. Output devices: monitor, printer, speakers, etc. Digitization Converting text, numbers, sound, photos, and video into data that can be processed by digital devices Digital convergence Blending several technologies into a single product Computer Concepts – Illustrated 8th Edition
- 8. Exploring How Computers Work Turning on a computer May need to enter user ID and password Computer program, or program Instructions that tell a computer how to carry out processing tasks Central processing unit (CPU) Main processor in a computer Memory: temporarily holds data Storage: holds data on a permanent basis Computer Concepts – Illustrated 8th Edition
- 9. Exploring How Computers Work (continued) File: named collection of data that exists on a storage medium Storage medium: hard disk, CD, DVD, flash drive, etc. Turning off a computer Microsoft Windows computer: use Start button Apple Macintosh computer: use Apple icon Computer Concepts – Illustrated 8th Edition
- 10. Computer Concepts – Illustrated 8th Edition Figure A-4: Start button in different versions of Windows
- 11. Categorizing Computers Personal computers include: Desktop computers Portable computers Notebook computers (sometimes called laptop computers) Netbooks Tablet computers Handheld computer A personal digital assistant (PDA) with enhanced features Computer Concepts – Illustrated 8th Edition
- 12. Computer Concepts – Illustrated 8th Edition Figure A-5: Examples of personal desktop computers
- 13. Computer Concepts – Illustrated 8th Edition Figure A-6: Examples of portable personal computers
- 14. Categorizing Computers (continued) Workstations Powerful desktop computers designed for specialized tasks Mainframe computer Large, expensive computer which can process data for thousands of users Supercomputer The term server has several meanings Can refer to hardware, software, or a combination of hardware and software Computer Concepts – Illustrated 8th Edition
- 15. Examining Personal Computers Basic parts of a desktop personal computer system System unit Display device: monitor Keyboard Mouse Storage devices Hard disk drive USB flash drive Optical drives Computer Concepts – Illustrated 8th Edition
- 16. Examining Personal Computers (continued) Basic parts of a desktop personal computer system (continued) Sound system Printer Network and Internet access Modem Web cam Computer Concepts – Illustrated 8th Edition
- 17. Computer Concepts – Illustrated 8th Edition Figure A-9: Typical desktop computer system with examples of peripherals
- 18. Examining Personal Computers (continued) Portable computers Come with built-in flat-panel monitor, keyboard, and speakers Other devices can be connected Computer network Two or more computers and other devices connected for sharing data and programs LAN (local area network) Internet: the largest network in the world Computer Concepts – Illustrated 8th Edition
- 19. Introducing Software Operating system (OS) Master controller for all activities that take place within a computer system Classified as system software Computer platform PC platform (also called Windows platform) Windows operating system Mac platform Macintosh OS Linux OS Computer Concepts – Illustrated 8th Edition
- 20. Computer Concepts – Illustrated 8th Edition Figure A-10: Popular operating systems
- 21. Introducing Software (continued) Graphical user interface (GUI) Displays on-screen graphical controls Application software Computer programs that help you use the computer to carry out tasks Examples: Adobe Reader, Microsoft Word, or Corel Paint Shop Pro Photo X2 Sharing files depends on system compatibility Computer Concepts – Illustrated 8th Edition
- 22. Computer Concepts – Illustrated 8th Edition Figure A-11: Popular elements of a GUI
- 23. Introducing the Internet and the Web Use the Internet to communicate with others Electronic mail (also called email) Chat group Instant messaging (IM) Internet telephony Also called Voice Over IP (VoIP) Blog Web (short for World Wide Web) Collection of Web pages, interconnected through the use of hypertext or links Computer Concepts – Illustrated 8th Edition
- 24. Introducing the Internet and the Web (continued) A browser is used to view Web pages Web site: a group of Web pages Home page Search site: to find information on the Web Search engine URL (Uniform Resource Locator) Every Web page has a unique address HTTP (Hypertext Transfer Protocol) Communications standard used to transport Web pages over the Internet Computer Concepts – Illustrated 8th Edition
- 25. Computer Concepts – Illustrated 8th Edition Figure A-14: Viewing a Web page
- 26. Computer Concepts – Illustrated 8th Edition Figure A-15: Parts of a URL
- 27. Understanding Email Basics Email account Need an email provider Such as Internet service provider, university, Gmail, Hotmail, etc. Email address An email message has several parts Recipient’s email address Address of additional recipients Message subject and body File attachments Computer Concepts – Illustrated 8th Edition
- 28. Understanding Email Basics (continued) Email is based on store-and-forward technology Email attachment Any file that travels with an email message Netiquette (Internet etiquette) Guidelines for maintaining civilized, effective communications online and in emails Emoticons Symbols that can be added to a message to help convey an emotion Computer Concepts – Illustrated 8th Edition
- 29. Computer Concepts – Illustrated 8th Edition Figure A-16: Parts of an email address
- 30. Computer Concepts – Illustrated 8th Edition Figure A-17: Parts of an email message
- 31. Talking Points: Who Is Reading Your E-Mail? Think of your email as a postcard rather than a letter FBI has e-mail scanning technology Many U.S. businesses monitor employee email Your email may be forwarded to others E-mail providers store backups of your email and can gather data from them Court decisions seem to state that email messages on an organization’s system are the property of the organization Computer Concepts – Illustrated 8th Edition
- 32. Summary This chapter introduced: Computer terms and concepts Basic parts of a computer system Different kinds of personal computers Various types of software The Internet, the World Wide Web, and e-mail Ways to preserve your privacy when using e-mail Computer Concepts – Illustrated 8th Edition