2electro & electnc age

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


7/17

Pehr and Advard Scheutz complete

their tabulating Machine, capable ofprocessing fifteen-digit numbers,

printing out results and rounding off to

eight digits.


8/17

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%3DG


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Listening!

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