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Samuel Morse's original telegraph
transmitter and receiver, 1837. Today's information age
began with the telegraph. It was the first instrument to
transform information into electrical form and transmit it
reliably over long distances. The original Morse telegraph
did not use a key and sounder. Instead it was a device
designed to print patterns at a distance. The transmitter,
in front, had code slugs shaped in hills and valleys. These
represented the more familiar dots and dashes of Morse code.
These patterns were printed at a distance by the receiver
(shown in the rear). It recreated the hills and valleys as
the arm was pulled back and forth by an electro-magnet,
which was responding to the signals sent by the transmitter.
Morse developed a key and sounder for his first commercial
telegraph in 1844. ==Smithsonian Photo #89-22161 by
Laurie Minor-Penland.
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Morse/Vail telegraph key, 1844.
This register was used to send the message "What Hath God
Wrought" on the experimental line between Washington, DC and
Baltimore, Maryland. ==Smithsonian Photo by Alfred
Harrell.
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Morse/Vail telegraph register,
1844. This register was used to receive the message "What
Hath God Wrought" on the experimental line between
Washington, DC and Baltimore, Maryland. ==Smithsonian
Photo by Alfred Harrell.
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An Edison Stock Printer. Labeled,
"Gold & Stock Telegraph Co. Edison's Patent No. 215". As
the electric telegraph sped information across the country,
bankers and businessmen realized that they could profit from
immediate knowledge of stock prices and other crucial data.
The new technology shortened the time for decision-making
and increased the pace and stress of the business day. But
early telegraph service was expensive. Outside the business
community, use of the telegraph spread slowly.
==Smithsonian Photo by Alfred Harre
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The Atlantic cable of 1858 was
established to carry instantaneous communications across the
ocean for the first time. Although the laying of this first
cable was seen as a landmark event in society, it was a
technical failure. It only remained in service a few days.
Subsequent cables laid in 1866 were completely successful
and compare to events like the moon landing of a century
later. Here, the cable on the left is representative of a
style that remained in use for almost 100 years. The cable
on the right, a coaxial cable, was part of the first
transatlantic telephone cable laid in 1956. ==Smithsonian
Photo by Alfred Harrell.
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Alexander Graham Bell's early
telephone equipment. To the right in this photograph are
several of Bell's early experimental telephones. They
depended on creating variable electrical patterns in wires
as a needle moved up and down in a liquid. This approach led
to problems with static. Later models, the telephones to the
left, relied on the principles of magnetic induction.
==Smithsonian Photo #89-21085 by Laurie Minor-Penland.
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A Bell commercial
magneto-telephone from 1877. This was one of the first
telephones on which both transmission and reception were
done with the same instrument. ==Smithsonian Photo
#74-2496 by Alfred Harrell.
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Late 19th and early 20th-century
telephones , including the tombstone (rear left), battery
box wall model (rear center), and Strowger dial phone (right
front). This group of telephones shows the changing design
of instruments from the late 19th through the early 20th
century. Note that the earlier telephones have no dials.
Dialing a number only became possible after automated
equipment was developed to make connections originally
handled by human operators. ==Smithsonian Photo #89-22162 by Laurie
Minor-Penland.
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Information Processing devices. A
doctor's stethoscope; a Hollerith Tabulating Machine,
sorter, and pantograph punch; and (upper right) an
Arithmeter, a type of cylindrical slide rule used by the
insurance industry to compute average life expectancies.
Industrialization in the 19th century made life faster and
more complex. To cope with these demands, new means of
calculating, sorting and processing information were
invented. ==Smithsonian Photo by Laurie Minor-Penland.
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Progress in Communications . An
NBC microphone, Magnavox loudspeaker, Echophone "Cathedral"
radio (1934), Western Electric Scissor phone and Edison
stock exchange ticker. The advent of the telegraph led to a
flood of inventions for communicating information in
electrical form. ==Smithsonian Photo by Laurie
Minor-Penland.
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The ENIGMA Machine and Bombe.
Armed forces have always been dependent on communications.
During World War II, the German Army and Navy tried to keep
their communications secret by using encryption devices
called Enigma machines. These sophisticated coding devices
could generate over 1 trillion different coding patterns.
The Germans believed they were too sophisticated for Allied
forces to break them. But in one of the best-kept secrets of
the war, first the Poles, and later the British and
Americans succeeded in deciphering messages. The wooden
device in the foreground is a 4 rotor German Enigma machine,
used for encoding. The large machine in the background is a
"Bombe," used for breaking the code. Working out the details
of codebreaking machines was one of the developments that
fostered electronic computers. ==Smithsonian Photo by
Laurie Minor-Penland.
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The ENIAC, or the Electrical
Numerical Integrator and Computer, was a large digital
electronic computer developed by the US. Army and University
of Pennsylvania late in World War II. This photograph shows
only a small section of a machine that stretched around the
walls of a room 30' by 50.' ENIAC was designed to compute
ballistics tables, a task that required many tedious
electronic calculations. But the designers made it
programmable, so that it could also be set to perform many
other calculation tasks. Because of its speed and
flexibility, ENIAC set the stage for the emergence of the
post-war computer industry. ==Smithsonian Photo #90-7164B
by Laurie Minor-Penland.
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This is the first model of the 45
rpm record player manufactured by RCA in the 1950's. The 45
rpm record was first introduced in 1949 by RCA. It quickly
became popular among young people as a medium for popular
songs. Rock and Roll music and the "45" grew up together.
==Smithsonian Photo by Eric Long
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Homebrew Computer Club. Many of
pioneer developers of personal computers prided themselves
on being members of the "counter culture." They met at
places like the "homebrew computer club" in Silicon Valley,
California, and dreamed of giving computer power to
individuals. The interest of such hobbyists helped create a
viable market for personal computers, even before their
capabilities were far too limited for office use.
==Smithsonian Photo #90-15065 by Jeff Tinsley.
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An Apple I Computer. Steve Jobs
and Steve Wozniak, the most famous members of the Homebrew
Computer Club, designed the Apple I in 1976. It was a kit
computer. Users bought the workings and built their own
case. Many leaders in mainline computer companies like IBM
and Digitial did not believe that personal comptuers were
powerful enough to have a market. Sales of the Apple I and
other PC's that followed proved them wrong. ==Smithsonian
Photo #92-13442 by Eric Long.
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Robot Auto Factory. This exhibit
scene shows a welding robot in context, doing spot welding
on an auto body. Most industrial robots used in the United
States today do jobs that are monotonous, repetitive or
dangerous to humans. Even so, they are replacing many jobs
previously held by people. Robots in American car plants are
often part of an elaborate computer network that controls
all parts of the production process, from ordering parts to
painting. The two computer screens in the lower right hand
corner of the scene are terminals on this network.
==Smithsonian Photo #90-15048 by Jeff Tinsley.
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An analog video disc and a digital
CD-Rom disc, shot to show the rainbow-like reflections
coming from their surfaces. New techniques of encoding and
distributing digital information are pacing the spread of
the information age throughout society. ==Smithsonian
Photo #90-6894 by Dane A. Penland.
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