Plan 55-A
id:
plan-55-a-309-770185
title:
Plan 55-A
text:
Automatic Telegraph Switching System Plan 55-A was one in a series of store and forward message switching systems developed by Western Union and used from 1948 to 1976 for processing telegrams. It is an automated successor to Plan 51, which commenced service in 1951 in a nationwide network of the U.S. Air Force, but required semi-automatic operation. Based on the technology of punched paper tape storage, the systems of the design were called reperforators. A reperforator performed functions simi
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Plan_55-A
date created:
date modified:
2023-07-23T09:05:12Z
main entity:
{"identifier":"Q7200868","url":"https://www.wikidata.org/entity/Q7200868"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/en/c/c1/Plan55acenter1.jpg","width":636,"height":476}
fields total:
13
integrity:
14