The Influential Environment

1840

Samuel

Morse

patented

“Morse code”

1860

American

Civil War

1876

Alexander

Graham

Bell patented

telephone

1930

1940

Telegraph Era

hand generated

both ends, direct lines

telex

typewriter and printer

switched physical

dialable

Western Union sells all

voice equipment to

AT&T for a $1 to

concentrate on

“message” (data) business

1947

Telephone

Era begins

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