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Presentation Activity Introduction to Computers Heather Hardin March 2, 2003 Hhardin_at_vt.edu History of Computers Major Step: The development of machines that could be ... – PowerPoint PPT presentation

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Title: Presentation Activity


1
Presentation Activity
  • Introduction to Computers
  • Heather Hardin
  • March 2, 2003
  • Hhardin_at_vt.edu

2
THE WORLD OF COMPUTERS
3
History of Computers
  • Major Step The development of machines that
    could be programmed. (Early 1800s)
  • Computers were used by the U.S. Census in 1890
  • 1st Commercial Computer was developed in 1951
    (Only 8 were Sold)

4
History of Computers
  • Mid-1970s Apple and Microsoft were established
  • Today computers have 1000 times the capability
    then when computers began at a fraction of the
    cost.

5
Computer Systems
  • How Computer Systems Work?
  • 3 Basic Functions
  • Compares numbers or symbols to see if they are
    the same.
  • Adds 2 numbers together
  • Subtracts 2 numbers from another

6
Types of Computers
  • Personal Computers (PC) small inexpensive,
    individual user
  • Laptop portable, light weight
  • Supercomputer fastest, used by large
    corporations
  • Mainframe used at universities and large
    companies
  • Minicomputer server, supports multiple users,
    used at medium-sized companies

7
Computer Memory
  • Byte unit of storage capable of holding a single
    character
  • Random Access Memory (RAM) Main memory
  • Read-Only Memory (ROM) Prerecorded, CANNOT BE
    DELETED.

8
Telecommunications
Modem device that connects a computer to a phone
line, allowing data to be transmitted from one
computer to another along that line. Download
Copy from the Internet or other main source
9
Computer Damage
  • This is what happens when you dont take care of
    your computer.

10
Summary
  • Computer Systems
  • 3 basic functions
  • Computer Memory
  • Telecommunications
  • Computer Damage
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