Technology Guide 1

1
Technology Guide 1

• Hardware

2
Agenda

• Computer system
• Computer types
• Devices
• Source data automation
• Selection Criteria

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Computer System

• Codes
• Memory size
• Speed
• Input
• Output
• CPU
• Primary storage
• Secondary storage
• Communication device

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Codes

• ASCII
• EBCDIC

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Memory Size

• Bit (binary digit), byte
• Kilobyte
• Megabyte
• Gigabyte
• Terabyte

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Speed

• Millisecond
• Microsecond
• Nanosecond
• Picosecond
• Megahertz (MHz)

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Agenda

• Computer system
• Computer types
• Devices
• Source data automation

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Computer Types - Generations

• First generation vacuum tubes
• Second generation transistors
• Third generation integrated circuits
• Fourth generation very large-scale integrated
  (VLSI) circuits or ultra large-scale integration
  (ULSI)
  
• Fifth generation massively parallel processing
• DNA computers
• Optical computers

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Computer Types - Size

• Supercomputers
• Mainframes
• Minicomputers
• Workstations
• Microcomputers
• Desktop personal computers
• Laptop computers/notebooks
• Palmtop computers

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Computer Types - Size

• Personal digital assistant
• Smart cards
• Network computers (NCs)
• Windows-based terminals (WBTs)

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Agenda

• Computer system
• Computer types
• Devices
• Source data automation
• Selection Criteria

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Devices - CPU

• Microprocessor
• Control unit
• Machine cycle (MIPS) instruction time and
  execution time
  
• Clock speed microcode (Megahertz MHz)
• Arithmetic-logic unit
• Primary storage
• Random-access memory (RAM)
• Block
• Cache memory
• Dynamic random access memories (DRAMs)
• Read-only memory (ROM)

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Devices - Buses

• Data bus
• Address bus
• Control bus
• Word length width of the buses

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Devices - Input

• Keyboard
• Mouse
• Touch Screen
• Light pen
• Joystick
• Scanners
• Voice
• Automated teller machines

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Devices - Output

• Monitors
• Printers
• Impact printers
• Nonimpact printers
• Plotters
• Voice

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Devices Secondary Storage

• Magnetic tapes
• Magnetic disks
• Redundancy Array of Inexpensive Disks (RAID)
• Magnetic diskette
• Optical storage devices
• Rewritable optical disks
• Compact disk
• Read-only memory (CD-ROM) disks
• CD-writable (CD-W)
• CD-Rewritable (CD_RW)
• Digital video disk (DVD)

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Agenda

• Computer system
• Computer types
• Devices
• Source data automation
• Selection Criteria

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Source Data Automation

• Point of sale terminals
• Bar code scanner
• Optical character reader
• Handwriting recognizers
• Voice recognizers
• Magnetic ink character readers
• Digital computer cameras

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Agenda

• Computer system
• Computer types
• Devices
• Source data automation
• Selection Criteria

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Selection Criteria

• Cost
• Speed
• Usage
• Compatibility
• Reliability
• Feature
• Future growth
• Vendor support

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Points to Remember

• Computer system
• Computer types
• Devices
• Source data automation
• Selection Criteria

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Discussion Questions

• What is the usage of the following different type
  of computer?
  
• Supercomputers
• Mainframes
• Minicomputers
• Workstations
• Microcomputers
• Desktop personal computers
• Laptop computers/notebooks
• Palmtop computers

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Discussion Questions

• What are the important criteria for purchasing
  the computer hardware for a department store such
  as Macys?
  
• What are the important criteria for purchasing
  the computer hardware for a elementary school?
  

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Assignment

• Review technology guide 1
• Read technology guide 2, 3, 4
• Form group and prepare group list
• Group assignment
• Research paper