Accession Number:

AD0685285

Title:

LOGIC DESIGN AND INTERFACE OF A LINCOLN WAND SYSTEM,

Descriptive Note:

Corporate Author:

CALIFORNIA UNIV LOS ANGELES SCHOOL OF ENGINEERING AND APPLIED SCIENCE

Personal Author(s):

Report Date:

1969-02-01

Pagination or Media Count:

133.0

Abstract:

A description of the design and interface of a 3-dimensional graphic input device is presented. The system functions as an auxiliary input device to a general purpose digital computer. The Lincoln Wand uses a sonic delay technique to periodically sample the position of a pen-sized stylus. This principle was developed by L. Roberts at the Lincoln Laboratory. The system described here was specially designed to interface with the Graphics Station developed jointly by the Variable Structure Computer, Computer Instrumentation and Digital Technology projects. The basic operating principles are presented and pertinent characteristics of the SDS Sigma 7 Computer and Graphics Station are described. A chapter is devoted to familiarizing programmers with the systems software and operational characteristics. The control logic is explained with logic diagrams, timing charts and logic equations. A data reduction algorithm and assembly language program are described. This program was timed using a software timing technique. The technique and results are furnished. Analysis of errors and resolution of the device are treated. Author

Subject Categories:

  • Computer Programming and Software
  • Computer Hardware

Distribution Statement:

APPROVED FOR PUBLIC RELEASE