Instructograph
id:
instructograph-306-18361178
title:
Instructograph
text:
The Instructograph was a paper tape-based machine used for the study of Morse code. The paper tape mechanism consisted of two reels which passed a paper tape across a reading device that actuated a set of contacts which changed state dependent on the presence or absence of hole punches in the tape. The contacts could operate an audio oscillator for the study of International Morse Code, or a sounder for the study of American Morse Code, or a light bulb. The Instructograph was in production from
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Instructograph
date created:
date modified:
2018-12-01T11:54:23Z
main entity:
{"identifier":"Q15995190","url":"https://www.wikidata.org/entity/Q15995190"}
image:
fields total:
13
integrity:
13