AN EXECUTIVE SYSTEM FOR A DEC 339 COMPUTER DISPLAY TERMINAL

Abstract

This report describes a real-time multiprogramming software system for a DEC 339 computer display terminal, which may communicate with an external computer through a serial-synchronous data set. The system is designed to support both programs which require the attention of an external computer while they are being executed and programs which are independent of external computation service. For either type of program, the entire graphics support is provided by the 339 system, but the interpretation of the relations implied by the graphics may be performed either in the 339 or in an external computer. Multiprogramming facility is provided to facilitate effective use of I/O devices in order to cope with the demands of a real-time environment.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1968
Accession Number
AD0685631

Entities

People

  • James H. Jackson

Organizations

  • University of Michigan

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Assembly Languages
  • Clocks
  • Computations
  • Computer Programming
  • Computers
  • Conversion
  • Data Sets
  • Data Transmission
  • Graphics
  • Language
  • Light Pens
  • Multiprogramming
  • Push Buttons
  • Remote Terminals
  • Scheduling (Production)
  • Systems Engineering
  • Terminals

Fields of Study

  • Computer science
  • Physics

Readers

  • Computer Science.
  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.