A Braille Interface to the Texas Instruments SR-52 Programmable Calculator.

Abstract

The Texas Instruments SR-52 programmable pocket calculator has been interfaced with a tactual display for use by a blind graduate assistant. The interacing uses simple, readily available series 4000 CMOS circuitry to convert the contents of the calculator's visual display to a self-scanned Braille output. The rate of character display is user controlled. Provisions are included to display the mantissa and exponent sign and calculator display mode. Blanks in the output are eliminated. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 21, 1976
Accession Number
ADA039885

Entities

People

  • C. P. Janota

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Abstracts
  • Calculators
  • Circuits
  • Comparators
  • Complementary Metal-Oxide Semiconductors
  • Computations
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  • Engineering
  • Impedance
  • Integrated Circuits
  • Local Oscillators
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  • New York
  • Personality
  • Schematic Diagrams
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Fields of Study

  • Physics

Readers

  • Computer Science.
  • Human-Computer Interaction (HCI).