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      • HARVEST
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      A COMPUTER DISPLAY SYSTEM

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      Agarwal_Shrawan_Kumar_1969_sec.pdf (8.932Mb)
      Date
      1969-04
      Author
      Agarwal, Shrawan Kumar
      Type
      Thesis
      Degree Level
      Masters
      Metadata
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      Abstract
      Computer-driven cathode-ray tube displays are becoming an important means of on-line man-machine communication and have found many applications. In the Project on Cartographic Automation being developed at the University of Saskatchewan it is proposed to use interactive display systems for making decisions. This thesis deals with the assessment of one possible display system. The commercially available Tektronix 611 storage display avoided the "refresh" requirement of standard CRT displays and provided high resolution flicker-free images. The advantages and limitations of a light pen and a "Write-Through Pointer" (a facility to point at a location without storing the beam) were investigated in conjunction with the Tektronix 611 to enable it to communicate with the PDP-8 computer. A light pen was designed, tested and constructed. A part of the logic controls for the storage display was shared with the feedback control in the case of the "Write-Through Pointer". Test programs were written to display cartographic information.
      Degree
      Master of Science (M.Sc.)
      Department
      Electrical and Computer Engineering
      Program
      Electrical Engineering
      Copyright Date
      April 1969
      URI
      http://hdl.handle.net/10388/11551
      Collections
      • Graduate Theses and Dissertations
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