Process Cycle - PowerPoint PPT Presentation

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Process Cycle

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Process Cycle. End-User Point of View. 1 Monitor. 2 Motherboard. 3 Microprocessor ... The Lighted Program Function Keyboard (LPFK) is a computer input device ... – PowerPoint PPT presentation

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Title: Process Cycle


1
Process Cycle
  • End-User Point of View

2
  • 1 Monitor
  • 2 Motherboard
  • 3 Microprocessor
  • 4 Primary Storage RAM
  • 5 Expansion Cards
  • 6 Power Supply
  • 7 CD ROM
  • 8 Secondary Storage Hard Drive
  • 9 Keyboard
  • 10 Mouse

3
Basic Cycle
Process
Input
Output
Storage
4
The First Hobby Computer Altair 8800
5
Input Devices
  • Early Devices
  • Unit record equipment
  • Punched card
  • Keyboarding
  • Pointing Devices
  • Video
  • Audio
  • Composite

6
Keyer
7
Chorded keyboard
8
LPFK
  • The Lighted Program Function Keyboard (LPFK) is a
    computer input device manufactured by I.B.M. that
    presents an array of buttons associated with
    lights. Each button is associated to a function
    in supporting software, and according to the
    availability of that function in current context
    of the application, the light is switched on or
    off, giving the user a graphical feedback on the
    set of available functions. Usually the button to
    function mapping is customizable.

9
Output Devices
  • Visual display unit
  • Speaker
  • Computer printer, including
  • Dot matrix printer
  • Inkjet printer
  • Laser printer
  • Thermal printer
  • LED printer

10
Storage
  • Punched Cards
  • Paper recording tape
  • Magnetic Recording Tape
  • Hard Drive
  • Floppy
  • Flash ROM
  • CD-Read/Write
  • Garbage Can!!!
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