COMPUTER TECHNOLOGY AND APPLICATIONS: COMPUTER BASICS AND TECHNOLOGY HISTORY

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COMPUTER TECHNOLOGY AND APPLICATIONS COMPUTER
BASICSAND TECHNOLOGY HISTORY

• Metcalfe County High School
• Prepared By Justin Smith

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Important Info!!!!

• Please take notes, you will have a test over the
  material covered within this PowerPoint.
• J Smith

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What is A Computer?

• A machine capable of executing instructions on
  data.

Two Supercomputers
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First Electronic Digital Computer

• Atanasoff-Berry Computer(ABC) developed in 1937
  by John Atanasoff was basically a giant
  calculator that took 3 years to develop.

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One of the first computers..

• ENIAC-Computer took up 1800sq feet(the area of
  most houses). Used by the military to help with
  the development of the atomic bomb and to
  calculate the range of artillery shells. Cost
  500,000 in 1946, today that would equal 6
  million dollars

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First Widespread Personal Computer

• Altair 8800 first personal computer made by
  MITS and sold for 367-this computer had no
  keyboard or screen. You clicked switches to make
  the machine work and add numbers.

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Enhanced First PC

• 2 computer designers by the names of Stephen Jobs
  and Steve Wozniak developed the first user
  friendly computer with a keyboard, monitor and
  disk storage. Both men founded Apple computer.

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4 General Operations of a Computer

• 4 Operations make up the Information Processing
  Cycle
• 1)Input
• 2)Process
• 3)Output
• 4) Storage
• Easy way to remember, you hit a key, the
  computer processes, the key is output to the
  screen and you are asked to store the key before
  closing.

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From Very Large to Compact

• Personal Computer-only operated by one person at
  a time.
• Examples of A personal computer
• Programming Desktop
  Laptop
• 9500-1980 2900-1997
  1200-2002

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4 Main Components of A Computer

• 1) Input Devices
• 2) Systems Unit
• 3)Output Devices
• 4)Auxiliary Storage
• More info on next slides!!!

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Input Devices

• Input devices allow you to enter data into
  memory.
• Most common type of input device Keyboard
• Other input devices 1)Keyboard, 2)Scanner
  3)Digital Camera 4)Drawing Pad

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Systems Unit

• Systems unit houses the internal components of
  the computer
• Main component of Systems unit CPU-the brains of
  the computer, CPU causes processing to occur

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Output Devices

• After processing information it can be displayed
  on output devices.
• 2 most common output devices
• 1)Printer 2)Monitor

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Auxiliary Storage

• Aux Storage is used to store instructions and
  data when not in used in memory
• 4 Main types of Aux Storage
• 1) Floppy Disk 2) Hard Disk 3) CD-Rom 4) Flash
  Drive

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Assignment

• Lets compare some computer systems
• Using the Comparison document and instructions
  found on Mr. Smiths website select two computer
  systems and compare them using the supplied
  graphic organizer.
• Next develop a comparison of the two computers in
  paragraph form using the research collected.

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Key Terms

• It is important for any person who is going to be
  around computers and technology to understand
  some basic terms that may be used and to realize
  what those terms are associated with.
• Complete the graphic organizer over the KEY
  COMPUTER PARTS.
• Later we will use the graphic organizer to
  identify these parts within a computer system.