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Which of the following is NOT an input device for a CAD system?
1. Raster-scan system
2. Graphics tablet
3. Joystick
4. Mouse

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Correct Answer - Option 1 : Raster-scan system

Explanation:

CAD System:

  • A CAD system permits thorough engineering within a short time using various software and a large number of design alternatives can be investigated.
  • Design errors are also reduced by the accuracy built into the system by means of calculations and check available within the system.
  • These factors lead to an improvement in quality and accuracy in the design.
  • CAD helps the designer to visualise the product and its component subassemblies and parts.
  • This reduces the time required to synthesize, analyze and document the design.
  • This productivity improves the results not only into lower design cost but also into shorter design project completion time.

CAD can be thought of as a system consisting of input devices, processors, and output devices. For example:

  • Input devices include a keyboard, mouse, Graphics tablet, Joystick, scanner, digital camera, and drawing tablet.
  • Processors include CPU (Central Processing Unit - ie the brains of the computer), operating system, memory, and CAD software.
  • Output devices include a monitor, printer, plotter, cutter, and CNC machine.

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