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Introduction to Engineering and Technology Concepts

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Introduction to Engineering and Technology Concepts Unit Five Chapter Five Computer and Internet Connections – PowerPoint PPT presentation

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Title: Introduction to Engineering and Technology Concepts


1
Introduction to Engineering and Technology
Concepts
  • Unit Five
  • Chapter Five
  • Computer and Internet Connections

2
Instructions for Success
  • Each chapter of every unit will begin with a
    Mindjog. This is a warm up question that you
    should answer in your workbook in the proper
    chapter.
  • Please take notes as you move through the
    presentations in the notebook that has been
    provided.
  • Sections will come up in each presentation with
    an assignment notice. Turn to the section
    detailed on the slide in your workbook and
    complete the assignment before proceeding.
  • Good luck!

3
Objective
  • Students will define the various components of
    computers, internet connection, as aspects of
    telecommunications.

4
Mindjog!
  • On your worksheet, please respond to the
    following question 
  • Chapter One asked What is the definition of
    technology. Did your answer have anything to do
    with a computer? If so, why did you state
    something computer-related?

5
Computers
  • When a lot of people think of technology they
    immediately visualize a computer with internet
    connection.
  • Computers are used in all areas of life and are
    especially good when used for communication.
  • A computer is a machine that performs a number of
    tasks controlled by a set of instructions
    (Wright, 2004).

6
Computers
  • Some examples that people may not consider
    computers are the scanners at the grocery
    checkout areas, banking machines, remote
    controls, Blu-ray players, and even video game
    units. Theres even a computer that controls the
    microwave (Wright, 2004)!

7
Computers
  • A computer includes physical equipment called
    hardware and operating instructions called
    software.
  • Hardware can be the computer and all the devices
    attached to it, like the mouse.
  • The software would be games that you play or
    operating systems (Wright, 2004).

8
Main Components
  • A computers heart would be the central
    processing unit (CPU). This is the working part
    of the computer that carries out instructions.
    The CPU is a microprocessor chip.
  • Another main component is memory, where the
    computer stores its data and operating
    instructions. There are two types read only and
    random access (Wright, 2004).

9
Memory
  • Read only memory (ROM) is memory that can be read
    by the computer but cannot be changed (Wright,
    2004).
  • Random-access memory (RAM) is memory that can be
    read or changed by the computer and the user.
  • In addition, data can be stored outside of the
    computer by external storage devices
  • These can include CD-ROMs, hard drives, flash
    drives, etc (Wright, 2004).

10
Input/Output Devices
  • Attached to the computer are input devices that
    allow the operator to enter data into the
    computers operating system.
  • These include microphones, the mouse, keyboard,
    scanners, etc.
  • Output devices is the data generated by the
    computer and includes monitors, speakers,
    printers, etc (Wright, 2004).

11
Assignment 1
  • Please turn to the section in your workbook
    entitled, Unit Five, Chapter Five Computer and
    Internet Connections.
  • Complete the extension questions under the
    Assignment 1 header before moving onto the
    next section of slides.

12
BEFORE MOVING ON
  • Did you complete the Assignment 1 Section
    under the Unit Five, Chapter Five Computer and
    Internet Connections section of your workbook?
  • If you have, please proceed to the next slide.

13
Networks
  • While computers alone can be used to do a
    specific task, they can be connected into
    networks. In this case, a computer is connected
    to other computers. There are two types
  • Local Area Network (LAN) used in a single
    building or site, it connects several personal
    computers to a special computer called the sever.
    The sever is used to store programs and data for
    the network.
  • Wide Area Network (WAN) covers large
    geographical areas. The largest WAN is the
    internet (Wright, 2004).

14
The Internet
  • The term internet means interconnected networks.
    The internet is a computer-based global
    information system.
  • No one really owns it because much of its
    creation and initial workings emerged from
    research that was federally funded.
  • It is a collection of large and small independent
    networks called intranets.
  • These intranets link hundreds of computers, with
    the internet allowing them to share information
    (Wright, 2004).

15
Internet Use
  • People use the internet for
  • The World Wide Web (WWW) a way to find and
    display multimedia documents.
  • Electronic Mail (e-mail) a way to send and
    receive written messages.
  • Newsgroups or chat rooms a way to carry on
    interactive discussions using written text.
  • Electronic commerce (e-commerce) A way to buy
    and sell goods (Wright, 2004).

16
Internet Service Provider
  • Every computer connected to the internet is part
    of a network, with companies having their own
    LAN.
  • A home computer is connected into a network
    formed by the Internet Service Provider (ISP)
    (Wright, 2004).

An example of a LAN,with the server in the
center.
17
More on the Internet
  • Large companies have built their own
    communication lines called backbones, which
    typically consist of fiber optic lines that
    connect regions in their systems.
  • The companies have also established connection
    points known as point of presence (POP). It is
    normally a telephone number or dedicated line.
  • The communication companies connected their
    systems at network access points (NAPs).
  • The internet also contains many routers, which
    are specialized computers that determine how to
    send information from one computer to another
    (Wright, 2004).

18
Internet Access
  • There are two was to connect to the internet and
    gain access Dial Up and Dedicated Access.
  • Dial up access has the computer connected to the
    internet through a modem. A modem is a device
    that can convert data signals into signals that a
    telephone system can recognize. It also changes
    the signals back to data.
  • With dedicated access, the computer is directly
    connected to the internet at all times. Digital
    subscriber lines (DSL) and cable modems are
    examples of these.
  • All computers have an internet protocol (IP)
    address. A typical IP address is a series of
    numbers like 12.225.193.96. The first set of
    numbers is called the net section, which states
    what network the computer is on and the next is
    the actual computer on the network (Wright,
    2004).

19
Domains
  • Every time a person uses the internet, he or she
    uses a domain name.
  • Each site has a uniform resource locator (URL)
    that is a code identifying the type and name of
    the document.
  • For example, the International Technology
    Education Association home page is
    http//www.iteawww.org.
  • Originally, there were seven types
  • .com Commercial Organizations
  • .edu four year colleges and universities
  • .gov government institutions
  • .int internet organizations
  • .mil military groups
  • .net organizations directly involved in
    internet operations
  • .org organizations other than those above
    (Wright, 2004).

20
The WWW
  • To access the world wide web (WWW), we need web
    browsers, which is a software program such as
    Netscape or internet explorer that acts as the
    interface between the user and the web.
  • Web Servers hold documents and related media.
  • Web Pages, which hold information in text form,
    use hypertext markup language (HTML) to tell the
    receiving computer how the page should look.
  • Links, or hyperlinks, are connections that move
    to another web page (Wright, 2004).

21
Assignment 2
  • Please turn to the section in your workbook
    entitled, Unit Five, Chapter Five Computer and
    Internet Connections.
  • Complete the extension questions under the
    Assignment 2 header before moving onto the
    next section of slides.

22
BEFORE MOVING ON
  • Did you complete the Assignment 2 Section
    under the Unit Five, Chapter Five Computer and
    Internet Connections section of your workbook?
  • If you have, please proceed to the next slide.

23
Unit Five Completed!
  • Please close this presentation and launch the
    file entitled, Unit 6, Chapter 1.

24
References
  • Wright, R. (2004) Technology The
    Goodheart-Willcox Company, Inc.
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