Cmpe 150 01

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Cmpe 150- 01

• Summer 2001

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The Computer A Mind Tool

• OBJECTIVES
• UNDERSTAND THE CONCEPT OF THE COMPUTER AS A MIND
  TOOL
• IDENTIFY DIFFERENT TYPES OF COMPUTERS AND DISCUSS
  THE COMPONENTS OF THE COMPUTER
• APPPRECITE BOTH POSSIBILITIES AND LIMITATIONS OF
  A COMPUTER
• RECOGNISE THE MANY WAYS IN WHICH THE COMPUTER
  AFFECTS YOUR LIFE
• DISCUSS VARIOUS DEFINITIONS OF COMPUTER LITERACY

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COMPUTER

• COMPUTER IS A MACHINE THAT STORES AND MANIPULATES
  SYMBOLS BASED ON A SERIOUS OF USER INSTRUCTIONS
  CALLED A PROGRAM.

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PARTS OF THE COMPUTER

• HARDWARE
• SOFTWARE
• PRAOGRAMS, PROGRAMMING
• DATA
• INFORMATION
• DATA PROCESSING
• COMPUTER PACKAGE

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PARTS OF THE COMPUTER

• HARDWARE
• IS THE MACHINERY MADE UP OF ELECTRONIC DEVICES
  AND CIRCUITS
• SOFTWARE
• IS THE HUMAN PROVIDED LOGIC
• PROGRAMS
• IS A SERIES OF INSTRUCTIONS TO THE COMPUTER

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PARTS OF THE COMPUTER

• PROGRAMMING
• IS THE PROCESS OF DEVELOPING THE SOFTWARE
• DATA
• IS THE RAW FACTS THAT ARE FED INTO THE COMPUTER
  FOR PROCESSING
• INFORMATION
• IS DATA THAT HAS BEEN PROCESSED INTO A FORM THAT
  IS MEANINGFUL TO THE USER

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PARTS OF THE COMPUTER

• DATA PROCESSING
• IS THE OPERATIONS THAT THE COMPUTER PERFOMS
• COMPUTER PACKAGE
• IS READILY AVAILABLE SOFTWARE

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TYPES OF COMPUTERS

• COMPUTERS ARE CLASSIFIED BY
• SIZE
• TYPE OF LOGIC THEY USE
• PURPOSE

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TYPES OF COMPUTERS

• BY SIZE
• MAINFRAMES
• MICROCOMPUTERS (PERSONAL COMPUTERS OR PCs)
• MINICOMPUTERS

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TYPES OF COMPUTERS BY SIZE

• MAINFRAMES
• IS A LARGE, EXPENSIVE COMPUTER THAT REQUIRES A
  SPECIAL SUPPORT STAFF AND A SPECIAL PHYSICAL
  ENVIRONMENT
• HOUSED IN A COMPUTER CENTRE
• USED IN LARGE BUSINESS, GOVERNMENTAL, OR ACADEMIC
  SITUATIONS TO SUPPORT MULTIPLE USERS

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TYPES OF COMPUTERS BY SIZE

• MICROCOPUTERS (PC)
• SMALL, ONE USER COMPUTERS THAT DO NOT REQUIRE A
  SPECIAL ENVIRONMENT OR SPECIAL KNOWLEDGE TO USE
  THEM
• MINICOMPUTERS
• USED MOSTLY BY MEDIUM-SIZED BUSINESSES
• THEY CAN SUPPORT MULTIPLE USERS

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TYPES OF COMPUTERS BY LOGIC

• DIGITAL
• USES NUMBERS AND IS THE COUNTING MACHINE
• ANALOG
• USES PHYSICAL RELATIONSHIPS AND IS THE MEASURING
  MACHINE
• CONVERTS PHYSICAL MEASUREMENTS INTO VALUES
  SIMILAR SPEEDOMETER THAT CONVERTS THE VOLTAGE
  GENERATED INTO MILES PER HOUR IN THE CAR.

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TYPES OF COMPUTERS BY PURPOSE

• SPECIAL PURPOSE
• DESIGNED FOR ONLY ONE PURPOSE
• NASA
• GENERAL PURPOSE
• CAN BE USED FOR MANY PURPOSES
• PLAY GAMES, HANDLE PAYROLL

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LIMITATIONS OF THE COMPUTER

• COMPUTER ERROR
• GARBAGE IN GARBAGE OUT (GIGO)
• ARTIFICIAL INTELLIGENCE
• NOT SUCCESSFUL

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COMPUTER APPLICATIONS

• Business Applications
• POS, airline reservation system, office
  automation
• Finance Applications
• EFT, automated check processing
• Industrial Applications
• CAM/ CAD, and robotics
• Agricultural Applications
• Educational Applications
• Computer based training

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COMPUTER APPLICATIONS

• Medical Care Applications
• Recreation Applications
• Games
• Personal Life Applications
• Personal Finance