The RAND Tablet: A Man-Machine Graphical Communication Device

Abstract

This Memorandum describes a low-cost, two dimensional graphic input tablet and stylus developed for conducting research on man machine graphical communications. The tablet is a printed-circuit screen complete with printed- circuit capacitive-coupled encoders with only 40 external connections. The writing surface is a 10 in. x 10 in. area with a resolution of 100 lines per inch in both x and y. Thus, it is capable of digitizing > 10 to the 6th power discrete locations with excellent linearity, allowing the user to write in a natural manner. The system does not require a computer-controlled scanning system to locate and track the stylus.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1964
Accession Number
AD0444103

Entities

People

  • M. R. Davis
  • T. O. Ellis

Organizations

  • RAND Corporation

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplifiers
  • Circuits
  • Coders
  • Coding
  • Communication Systems
  • Computer Communications
  • Computer Programming
  • Computer-Aided Design
  • Computers
  • Couplings
  • Data Processing
  • Engineering
  • Equivalent Circuits
  • Errors
  • Printed Circuits
  • Shift Registers
  • Two Dimensional

Readers

  • Computer Science.
  • Database Systems and Applications
  • Image Processing and Computer Vision.