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8/22/2019 2electro & Electnc Age
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C. The Electromechanical Age
1840-1940
-The discovery of ways to harness electricitywas the key advance made during this
period. Knowledge and information could
now be converted into electrical impulses.
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Voltaic Battery
Telegraph
Telephone and Radio
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The first electric battery, known as the Voltaicpile was invented 18th century by
Alessandro Volta.
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Samuel F.B. Morse conceived of his versionof an electromagnetic telegraph in 1832 and
constructed an experiment version in 1815.
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Alexander Graham Bell. 1876
Followed by the discovery thatelectrical waves travel through
space and can produce an effectfar from the point at which theyoriginated by Guglielmo Marconiin 1894
These two events led to the
invention of the radio 1852-George Boole develops
binary algebra
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Tabulating Machine
ComptometerComptograph
Punched cards
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Pehr and Advard Scheutz complete
their tabulating Machine, capable ofprocessing fifteen-digit numbers,
printing out results and rounding off to
eight digits.
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Dorr Felt devises the Comptometer, a key driven
adding and subtracting calculator.
Felts Comptograph, containing built-in
printer, is intoduced
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Herman Hollerith was the first person
to successfully use punched cards in1890.
was adapted for use in early
computers and provided computerprogrammers with a new way to put
information into their machine.
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Censu s Machine
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Hollerith was the father of
information processing and
found the Tabulating machineCompany which later became
the Computer Tabulating
Recording Company.
Hollerith company went to
become the International
Business Machines
Corporation known today
as IBM.
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The Millionaire, the first
efficient four-function
calculator invented by
Otto Shweiger, a Swiss
Engineer.
Vacuum tube was
developed by Lee DeForest which provide
electricity controlled
switch.
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The Electronic Age:
1941-Present
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In 1941, Konrad Zuse built the first
programmable computer called Z3. A computer
is programmable because of following
instructions.
Z3 is designed to solve engineering equations
rather than basic arithmetic problems.
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1942
Howard Aiken a PhD student of Harvard
University built the Mark I The First
Stored Program Computer
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John Atanasoff and Clifford berry completed the
first all-electric computer the ABC (Atanasoff-Berry
computer).
was the first computer to use electricity in the
form of vacuum tubes to make electric
computation possible.Used for solving complex system of equations.
http://images.google.com.ph/imgres?imgurl=http://www.cs.iastate.edu/jva/images/berry-1962.gif&imgrefurl=http://www.cs.iastate.edu/jva/books/mollenhoff/overview.shtml&h=784&w=536&sz=120&hl=en&start=1&um=1&tbnid=qwtsWi58ThekOM:&tbnh=143&tbnw=98&prev=/images%3Fq%3DClifford%2Bberry%2B%26svnum%3D10%26um%3D1%26hl%3Den%26sa%3DG8/22/2019 2electro & Electnc Age
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ThankYou For
Listening!