Introduction to Computers

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Introduction to Computers

• Business Technology Essentials

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What you will learn

• Troubleshooting Computers and Printers
• Define computer terms
• Lean computer components
• Discuss computer software
• Discuss the Internet and World Wide Web

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Parts of the computer
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What is a computer?

• A computer is an electronic device that can
  receive and manipulate data (input) and produce
  information (output)
• A collection of devices that function together as
  a system

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What does a computer do?

• Computers perform four general operations
• Information Processing Cycle
• Input
• Process
• Output
• Storage

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How does a computer know what to do?

• A computer must be given a detailed list of
  instructions to tell it what to do.
• These instructions are called computer programs
  or software.
• The program or software must be stored on the
  computer before you can give the program/software
  any other instructions
• How many programs can you name?

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What are the components of a computer?

• Five primary components that make up a computer
• Input Devices
• Central Processing Unit
• Memory
• Output Devices
• Storage Devices

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Input Devices

• Any hardware component that allows you to enter
  data, programs, commands, and user responses into
  a computer
• Based on this definition, what do you think input
  devices are?

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Input Devices

• Keyboard
• Mouse
• Scanner
• Floppy Drive
• CD Drive
• Internet
• Digital Camera

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Central Processing Unit

• Contains the electronic circuits that cause
  processing to occur
• It is the brain of the computer
• The CPU contains a chip called a processor
• High end processors can perform some operations
  10 million time in a tenth of a second the time
  it takes you to blink!

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Memory

• Consists of electronic components that store data
  letters, numbers, sounds
• One Kilobyte (KB) 1,000 memory locations
• One Megabyte (MB) 1,000,000 memory locations
• Memory location, or byte, usually stores one
  character
• How much would 96 MB hold?

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Output Devices

• Output devices make information on your computer
  available for use
• Information output can come in many different
  ways
• Can you think of output devices? (There are LOTS
  so think outside the box)

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Output Devices

• Monitor
• Printer
• CD/Floppy Disks
• Internet
• Speakers/headphones
• MP3 players

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Storage Devices

• They store information from the computer.
• Floppy Disks
• CDs
• Flash drives

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Software

• Application software consists of programs that
  tell a computer how to produce information
• Software is imperative for you to use your
  computer the way you want to.

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The Internet

• The worlds largest network it links millions
  of computers together.
• Can view a web site which is a collection of web
  pages.
• Each web page has a unique address called a
  Uniform Resource Locator (URL)

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How to get information

• Step 1 Your computer make a connection to an
  Internet Service Provider (ISP)
• Step 2 You enter the URL
• Step 3 The web browser locates the site attached
  to the URL and displays information

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Monitor wont work

• Make sure the monitor is on
• Make sure the CPU is on
• Make sure the cables in the back of the monitor
  are plugged in.
• Two plugs
• Power
• CPU cable

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Keyboard or Mouse wont work

• Check to make sure they are plugged in

• Mouse
• USB plug
• Purple to purple

• Keyboard
• Green to Green

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Internet doesnt work

• Check the blue cable
• If the bottom right of your screen looks like
  this
• You are not connected to the Internet

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Printer Problems???

• Situation You have pressed print and nothing is
  happening.
• First Check for paper
• Second Check that you are printing to the
  correct printer

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What did we learn?

• What is a computer?
• What does a computer do?
• What are the five components of a computer?
• Where is the CPU, monitor, keyboard, mouse?
• What is the Internet?
• How does the Internet work?
• What is a URL?

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How to purchase a computer

• 1 Determine what application products you will
  use on your computer
• If you wanted to use your computer for creating
  videos what would you need?
• If you wanted to get on the Internet what would
  you need?
• 2 Look at purchasing options buying from your
  bookstore, local computer dealer, directly from
  the company
• 3 Use a worksheet to compare computers, service,
  and other features
• 4 Consider more than just price
• 5 Buy a computer compatible with the ones you
  use elsewhere