The Rationale and Specification of the ELLA Graphics System Version 1

Abstract

The ELLA Graphical Language include graphical representations of most of the high level abstractions in text ELLA, in particular high level data-types and behavioural constructs. The Graphical Editor allows a designer to draw a circuit using these abstractions, which is then compiled into the ELLA system. Graphical text declarations can be used in exactly equivalent ways in the extended ELLA system specified here. Graphical input system thus gives the designer the freedom to use ELLA graphics or text where each is most appropriate, without losing the high level design capabilities when he prefers to use graphics. Keywords: Great Britain; Military publications; Periodicals.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1989
Accession Number
ADA219329

Entities

People

  • C. S. Wood
  • J. I. Thompson
  • N. E. Peeling

Organizations

  • Royal Signals and Radar Establishment

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundaries
  • Compilers
  • Computer Programs
  • Databases
  • Diagrams
  • Grids
  • Hierarchies
  • Intellectual Property
  • Language
  • Law
  • Machines
  • Operating Systems
  • Prototypes
  • Simulators
  • Specifications
  • Standards
  • Two Dimensional

Fields of Study

  • Education

Readers

  • Business Analytics
  • Database Systems and Applications
  • Military History of the United States in the 20th Century.