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Computer%20Literacy

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Title: Computer%20Literacy


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Computer Literacy
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Computer Literacy
Brought to you by...
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Computer Literacy
The first electronic digital computer built in
the United States, ENIAC, was unveiled at the
University of Penn-sylvania in 1946. It
weighed 30 tons, filled the space of a two-car
garage, and contained 18,000 vacuum tubes, which
failed on average at the rate of one every seven
minutes. It cost half a million dollars in 1946
prices.
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Computer Literacy
Today, the same amount of computing power is
contained in a pea-size silicon chip. Almost any
home computer costing as little as 100 can
outper-form ENIAC. Put another way, if the
automobile and airplane businesses had developed
like the computer business,
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Computer Literacy
a Rolls Royce would cost 2.75 and run for 3
million miles on one gallon of gas. And a
Boeing 767 would cost just 500 and circle the
globe in twenty minutes on five gallons of
gas. Tom Forester, ed. The Information
Technology Revolution (Cambridge, MA MIT Press,
1985)
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Computer Literacy
Uses for Computers
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Computer Literacy
  • GENERAL PURPOSE
  • Word processing
  • Spreadsheets
  • Databases
  • Graphics
  • Communication
  • Education
  • Entertainment
  • SPECIAL PURPOSE
  • Watches
  • Telephones
  • Appliances
  • Traffic Signals
  • Automobiles
  • Airplanes
  • Instruments

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Computer Literacy
Operating Systems
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Computer Literacy
  • MS-DOS
  • Windows 95
  • Windows NT
  • SYSTEM 8
  • VAX/VMS
  • UNIX
  • Provide an interface between the user and the
    computer
  • Manage data and files and provide security to
    multiple users
  • Execute other computer programs
  • Manage peripheral devices such as printers,
    modems, disk drives, scanners, etc.

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Computer Literacy
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Computer Literacy
Hardware
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Computer Literacy
Computer Components
Processor
Input
Output
Memory
Secondary Storage
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Computer Literacy
Computer Components
Processor
Input
Output
Memory
Secondary Storage
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Computer Literacy
Stereo System
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Computer Literacy
Computer System
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Computer Literacy
Serial vs. Parallel Connections
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Computer Literacy
  • Parallel

0 1 0 0 0 0 0 1
R E C E I V E R
S E N D E R
A is represented by 01000001
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Computer Literacy
Parallel
R E C E I V E R
S E N D E R
A is represented by 01000001
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Computer Literacy
  • Parallel

0 1 0 0 0 0 0 1
R E C E I V E R
S E N D E R
A is represented by 01000001
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Computer Literacy
Serial
0 1 0 0 0 0 0 1
R E C E I V E R
S E N D E R
A is represented by 01000001
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Computer Literacy
  • Serial

1 0 0 0 0 0 1
R E C E I V E R
S E N D E R
A is represented by 01000001
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Computer Literacy
  • Serial

1 0 0 0 0 0 1
0
R E C E I V E R
S E N D E R
A is represented by 01000001
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Computer Literacy
  • Serial

0 0 0 0 0 1
0
R E C E I V E R
S E N D E R
A is represented by 01000001
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Computer Literacy
  • Serial

0 0 0 0 0 1
0 1
R E C E I V E R
S E N D E R
A is represented by 01000001
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Computer Literacy
  • Serial

0 0 0 0 1
0 1
R E C E I V E R
S E N D E R
A is represented by 01000001
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Computer Literacy
  • Serial

0 0 0 0 1
0 1 0
R E C E I V E R
S E N D E R
A is represented by 01000001
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Computer Literacy
  • Serial

0 0 0 1
0 1 0
R E C E I V E R
S E N D E R
A is represented by 01000001
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Computer Literacy
  • Serial

0 0 0 1
0 1 0 0
R E C E I V E R
S E N D E R
A is represented by 01000001
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Computer Literacy
  • Serial

0 0 1
0 1 0 0
R E C E I V E R
S E N D E R
A is represented by 01000001
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Computer Literacy
  • Serial

0 0 1
0 1 0 0 0
R E C E I V E R
S E N D E R
A is represented by 01000001
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Computer Literacy
  • Serial

0 1
0 1 0 0 0
R E C E I V E R
S E N D E R
A is represented by 01000001
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Computer Literacy
  • Serial

0 1
0 1 0 0 0 0
R E C E I V E R
S E N D E R
A is represented by 01000001
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Computer Literacy
  • Serial

1
0 1 0 0 0 0
R E C E I V E R
S E N D E R
A is represented by 01000001
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Computer Literacy
  • Serial

1
0 1 0 0 0 0 0
R E C E I V E R
S E N D E R
A is represented by 01000001
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Computer Literacy
  • Serial


0 1 0 0 0 0 0
R E C E I V E R
S E N D E R
A is represented by 01000001
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Computer Literacy
  • Serial

0 1 0 0 0 0 0 1
R E C E I V E R
S E N D E R
A is represented by 01000001
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Computer Literacy
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