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clausura convencion clausura convencion Presentation Transcript

  • Computer Concepts - Illustrated Introductory, Seventh Edition UNIT A: Computer and Internet Basics
  • Objectives
    • Introduce digital technology
    • Define computers
    • Explore computer functions
    • Categorize computers
    • Examine personal computer systems
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Objectives
    • Introduce software
    • Introduce the Internet and the Web
    • Understand email basics
    • Talking Points: Who Is Reading Your Email?
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Introducing Digital Technology
    • Digital Technology – includes computers and the Internet
      • Has changed our lives
        • Entertainment, information, communication
      • Allows people in societies around world to
        • Use innovative products
        • Adjust to industries in transformation
        • Watch new markets emerge
        • Deal with complex issues which influence culture, politics, and economics
    ComputerConcepts – Illustrated Introductory, Seventh Edition
  • Introducing Digital Technology
    • Digital revolution
      • Ongoing process of social, political, and economic change
      • Brought about by digital technology
    • Information society
      • Owning, generating, and distributing information becomes significant economically and socially
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Introducing Digital Technology
    • Digital revolution impacts tools available to you
      • Computers
      • Portable media devices
      • Cameras and camcorders
      • Cell phones
      • Radios and television
      • GPS
      • DVD and CD players
      • Digital voice recorders
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Introducing Digital Technology
    • Digital revolution began in 1940s and 1950s
      • Transistors
      • Integrated circuits – called computer chips
    • Digital watches – 1972
    • Handheld electronic calculators - 1973
    • First successful mass-produced computer - Apple II in 1977
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Introducing Digital Technology
    • Personal computers started slowly in marketplace
      • Apple I (1976) and Apple II (1977)
      • No compelling software
    • IBM introduced IBM PC - 1981
      • Brought PCs to consumer
    • Computer named Machine of the Year
      • Time magazine - 1982
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Introducing Digital Technology
    • Why do I need a computer?
      • Create documents
      • Analyze numbers
      • Edit photos
      • Create graphics
      • Access information
      • Communicate
      • Network
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Introducing Digital Technology
    • Digitization
      • Process of converting text, numbers, sound, photos, and video data into data that can be processed by digital devices
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Defining Computers
    • Computer
      • Electronic device that
        • accepts input
        • processes data
        • stores data
        • produces output based on instructions in stored programs
    • Personal Computer (PC)
      • Computer system includes
        • Hardware
        • Peripheral devices
        • Software
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Defining Computers
    • Hardware
      • Electronic and mechanical parts of computer
    • System unit
      • Core hardware in computer system
    • Peripheral device
      • Hardware added to computer system to expand what computer can do
    • Software
      • Computer program tells computer how to perform particular tasks
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Defining Computers Computer Concepts – Illustrated Introductory, Seventh Edition
  • Defining Computers
    • Input device
      • Used to input data into computer
        • keyboard or mouse,
    • Output device
      • Makes output visible and/or usable
        • Monitor, printer, or speakers
    • Digital convergence
      • Several technologies with distinct functionalities evolve to form single product
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Exploring How Computers Work
    • User ID and password
      • Assigned for security reasons
      • Usually assigned by system administrator
    • Computer program (program)
      • Instructions tell computer how to carry out processing tasks
      • Running program = start program so it is ready for use.
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Exploring How Computers Work
    • Input
      • Anything put into computer
    • Processing
      • Working with data
      • Takes place in processor
    • CPU (Central Processing Unit)
      • Main processor, or brain, of computer
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Exploring How Computers Work
    • Memory
      • Temporarily holds data waiting to be processed, stored, and output
    • Storage
      • Holds data permanently
      • Not immediately needed for processing
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Exploring How Computers Work
    • File
      • Named collection of data on storage medium
        • Hard disk, DVD, CD, flash drive
    • Filename
      • Can give a clue to its contents
      • Consists of two parts
        • Name left of period
        • File extension right of period
    • File extension
      • Period and letters following
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Exploring How Computers Work
    • Output
      • Processed results produced by computer
        • Reports, documents, music, graphs, pictures
    • Output device displays, prints, or transmits results of processing
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Exploring How Computers Work
    • Basic Computer Functions
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Categorizing Computers
    • Computers are categorized by:
      • How used
      • Cost
      • Size
      • Processing capability
    • Helps purchasers make decisions
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Categorizing Computers
    • Personal computers (PC)
      • Desktop computers, notebooks, tablets
      • Designed to meet needs of individuals, schools, home users, small businesses
      • Wide variety of software
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Categorizing Computers
    • Desktop
      • Fits on or under desk
      • Vertical case called Tower
      • Easily upgradeable
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Categorizing Computers
    • Notebook
      • Move computer from place to place
      • Smaller than desktop, same computing power
      • Generally cost more than desktops
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Categorizing Computers
    • Tablet
      • Portable
      • Touch sensitive screen
      • Write or draw
      • Many applications involved handwritten input
      • Used ‘on the go’
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Categorizing Computers
    • Ultra-mobile
      • Small tablet
      • Runs most software designed for larger computers
      • Many have camera, GPS, games
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Categorizing Computers
    • Handheld computer
      • Essentially a personal digital assistant (PDA) enhanced with features
        • Removable storage, email, Web access, voice communication, camera, GPS
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Categorizing Computers
    • Workstations
      • Powerful desktop computers
        • Designed for specialized tasks
        • Lots of processing speed
        • Medical imaging, full-motion video graphics, design
    • Mainframe computer
      • Large, expensive computer used to process data from hundreds or thousands of users
    • Supercomputer
      • One of fastest computers in world when built
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Categorizing Computers
    • Form factor
      • Refers to physical attributes and intended use of component
    • Server
      • Computer hardware or specific software, or a combination, which serves other computers by supplying them with data
      • Almost any type of computer can be a server
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Examining Personal Computers
    • Computer system refers to a computer and its attached devices
    • PCs vary in size and design, but typically contain similar elements
    • System unit
      • Case that holds power supply, storage and circuit boards, including “motherboard”
    • Display device (monitor)
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Examining Personal Computers
    • Basic computer system parts
      • System unit
        • Case that holds power supply, storage and circuit boards, including “motherboard”
      • Display device (monitor)
      • Keyboard and mouse – input devices
      • Storage devices
        • Hard disk, disk drives, USB flash drives
        • Data is read from and written to storage devices
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Examining Personal Computers
    • Basic computer system parts (cont’d.)
      • Speakers and sound cards
      • Printer – output device
      • Modem and network cards
        • Establish Internet/network connection
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Examining Personal Computers
    • Computer network
      • Two or more computers and other devices connected for purpose of sharing data and programs
    • LAN (Local Area Network)
      • Network located within limited geographical area
    • Internet
      • Largest network in world
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Introducing Software
    • Computers need software to operate
    • Application software help user carry out tasks
      • Word processing, spreadsheets, etc.
    • Windows software designed for Windows operating system
    • Operating system software
      • Master controller of all computer activities
      • Classified as system software
        • Helps computer monitor itself to function efficiently
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Introducing Software
    • Platform
      • Underlying hardware and software of computer system
      • Defined by processor and OS
    • Most OSs use graphical user interface (GUI)
      • Manipulated by mouse
      • Icons, menus, buttons
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Introducing Software Elements of a GUI Computer Concepts – Illustrated Introductory, Seventh Edition
  • Introducing Software
    • Sharing files depends on system compatibility
    • Windows and Mac platforms originally not compatible
    • Some application software created version for Windows and Mac
    • Can share files if both computers use same software
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Introducing the Internet and the Web
    • Internet offers abundant resources
      • Information
      • Communication
      • Commerce
      • Entertainment
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Introducing the Internet and the Web
    • Communication
      • Email (electronic mail)
        • One of most popular ways to communicate
      • Chat groups
        • Several people communicating in real time by typing comments to each other
      • Internet telephony
        • Allows voice conversations to travel over Internet
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Introducing the Internet and the Web
    • Instant Messaging (IM)
      • Private version of chat
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Introducing the Internet and the Web
    • Social networks
      • MySpace, Facebook
        • Used to stay in touch with friends, family, and other members of same social network
    • Blog
      • Written personal journal posted on Web with free access by general public
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Introducing the Internet and the Web
    • The Web
      • Collection of linked documents graphics, and sound accessed over Internet
    • Web pages
      • Part of Internet used most often
      • Connected through use of hypertext or links
      • Can include text, photos, video, sound, animation
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Introducing the Internet and the Web
    • Browser
      • Program that allows you to view Web pages on computer
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Introducing the Internet and the Web
    • Web site
      • Web pages on related topic that are grouped together
    • Home page
      • Main page of Web site
      • Acts as doorway to rest of site
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Introducing the Internet and the Web
    • Finding information on Web
      • Search engine
        • Web site providing variety of tools to help find information
      • Keyword
        • Word or phrase to describe information you are trying to find
        • Search engine will provide links to pages that match keyword
    Computer Concepts – Illustrated Introductory, Seventh Edition
    • Uniform Resource Locator (URL)
      • Unique address for Web page
      • Indicates:
        • computer on which page is stored
        • location on Web server
        • folder name or names in which it is stored
        • Filename and file extension
    • Hypertext Transfer Protocol (HTTP)
      • Communications standard used to transfer information over Internet
    Introducing the Internet and the Web Computer Concepts – Illustrated Introductory, Seventh Edition
  • Understanding Email Basics
    • Email accounts available through email providers
      • Universities, Gmail, EarthLink
    • Accounts include storage area called mailbox
    • Email address
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Understanding Email Basics
    • In order to send and receive email
      • Computer must be hooked up to Internet
      • Must have email software installed
    • Email message parts
      • Message header
        • Address of receiver(s), message subtext, names of any attachments
      • Body
        • Actual message
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Understanding Email Basics
    • Email message parts
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Understanding Email Basics Email Features Computer Concepts – Illustrated Introductory, Seventh Edition
  • Understanding Email Basics
    • Store-and-forward technology
      • Communications method in which data can be stored until transmission is possible
    • Email attachments
      • In addition to body of message, you can attach
        • Documents, spreadsheets, photos, video, sounds
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Understanding Email Basics
    • Netiquette (Internet etiquette)
      • Guidelines for maintaining civilized and effective communication in online discussions and email exchanges
        • All caps considered SHOUTING AND RUDE
    • Never write anything personal or damaging in an email
      • Nonprivate form of communication
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Talking Points: WHO IS READING YOUR EMAIL?
    • Who is Reading your Email?
    • Electronic Communications Privacy Act of 2000
      • Prohibits use of email as evidence unless judge approves search warrant
      • No such protection offered in workplace
      • Many businesses monitor email
    • Patriot Act
      • Relaxes rules for obtaining and implementing search warrant
      • Easier to get email logs and addresses from email provider
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Talking Points: WHO IS READING YOUR EMAIL?
    • Your email might become public
      • Forwarding
      • Technicians might see it during routine maintenance
      • Email exchanges, including those you delete, can be stored as backup on server
    • Some Web-based providers monitor how often you log in
      • May monitor keystrokes to map which links you click
    Computer Concepts – Illustrated Introductory, Seventh Edition
  • Talking Points: WHO IS READING YOUR EMAIL? Computer Concepts – Illustrated Introductory, Seventh Edition
    • Think of email as postcard, rather than letter
    • Save your controversial comments for face-to-face conversations