evolution of computers
DESCRIPTION
from the first to the present all types of computer are been described.....TRANSCRIPT
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evolution of
Computer
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Since man is born with intelligence, he thought of ways that would make things easy for him. One of the problems encountered by man was counting the things he had. Because of this, he invented something that could help him count fast and easy.
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The AbacusAbout 4,000 years ago, the Chinese
invented the ABACUS. It is an adding tool that can help can you
add & subtract numbers by moving beads back & forth on rods. The abacus was one of the earliest
counting devise invented to help man solve his counting problems.
EARLY COMPUTING DEVICES
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THE ABACUS
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In 1642, Blaise Pascal, a French mathematician, invented the Pascal calculator. This device, also known
as the Pascaline, operated 8 movable dials, which could add numbers up to 8 figures long. It
was used to perform simple arithmetic calculations. This device
was limited to addition & subtraction only.
THE PASCALINE
CALCULATOR
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THE PASCALINE CALCULATOR
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In 1673, Gottfried Leibntiz, a German mathematician &
philosopher, enchanced the Pascaline by creating a device that could also multiply. It can
even find the square root of number. The device was called
the Leibnitz Calculator/ machine.
LEIBNITZ CALCULATO
R
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LEIBNITZ CALCULATOR/MACHINE
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In 1801, Joseph-Marie Jacquard, a Frenchman, invented the Jacquard’s
loom. Jacquard’s loom used punch card to program
pattern that were outputted as woven fabrics by the loom.
JACQUARD’S AUTOMATIC LOOM
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JACQUARD’S AUTOMATIC LOOM
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Difference EngineIn 1822, Charles Babbage, a
British mathematician professor, invented the
Difference Engine. Powered by steam & as large as a
locomotive, the machine had the capacity to perform calculations
& print the results.
ELECTRO-MECHANICAL COMPUTING DEVICES
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DIFFERENCE ENGINE
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In, 1833, several years after Babbage worked on the Difference Engine, he began working on the first general-
purpose digital computer, which he called the Analytical Engine. This steam-powered engine outlined the basic
elements of today’s modern general-purpose computer and was a
breakthrough concept.
ANALYTICAL ENGINE
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ANALYTICAL ENGINE
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Electronic Computing Devices
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In 1889, Herman Hollerith, an American inventor, invented the Hollerith’s
Tabulating Machine . The machine was a punch card reader & had the capacity
to store & process data. Hollerith brought his punch card reader into the
business world, founding the Tabulating Machine Company which later became International Business Machine (IBM)
in 1924.
HOLLERITH’S TABULATING
MACHINE
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HOLLERITH’S TABULATING MACHINE
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This all-electronic calculator was invented by Howard H.
Aiken in 1930. This was used to create ballistic charts for the U.S. Navy. The Mark 1 is
called the Harvard-IBM Automatic Sequence
Controlled Calculator.
MARK 1
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MARK I
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Between 1943 and 1946, the ENIAC or the Electronic
Numerical Integrator and Computer was developed by
John Presper Eckert and John Mauchly. This general purpose computer computed at a speed
1,000 times faster than the Mark 1.
ENIAC
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ENIAC
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Today’s
Computers
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Supercomputers are the most powerful computers made. Supercomputers
are used to process huge amount of data for
complex processes such as nuclear fission.
SUPERCOMPUTERS
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SUPERCOMPUTERS
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Mainframe computers are the largest among the
computers in use today. Mainframe computers are
used where many people in large organizations are
frequently accessing similar information.
MAINFRAME COMPUTERS
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MAINFRAME COMPUTERS
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