unidad 1
TRANSCRIPT
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UNIDAD 1
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THE HISTORY OFCOMPUTERS
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WHAT IS A COMPUTER?
A computer is an electronic machine that accepts information (Data), processes it according to specific instructions, and provides the results as new information.
Monitor
Floppy Disk Drive
System Unit
Keyboard
CD-ROM / DVD-ROM
Drive
Mouse
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III- ELECTRICAL COUNTING MACHINES
along with punchedcards instead of mechanical gears.
9- The US census of the 1880 took 9 years to compile and led to inaccurate figures. To solve the problem, Herman Hollerith invented a calculating machine that used electricity
1888
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III- ELECTRICAL COUNTING MACHINES
11- MARK I was built by a team from IBM and Harvard University. Mark I used mechanical telephone switches to store information. It accepted data on punched cards, processed it and then output the new data.
1943
51 feet long and weighed over 5 tons
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IV- ELECTRONIC COUNTING MACHINES
12- The ENIAC was the first US-built all-electronic computer built to perform ballistics calculations. (Away from IBM)
1946
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TRANSISTORS ON A CIRCUIT BOARD
Transistors
Capacitor
Resistors
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TWO INVENTIONS THAT CHANGEDTHE WAY COMPUTERS ARE BUILT!!
1961
The IC revolutionized the entire electronic technology. Ex: The Pentium Processor contains 3.1 Million Transistors in 1.5 inch square!
2- The (IC) Integrated Circuit
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HOW THE PROCESSOR (CPU) IS PLACED ON THE MOTHERBOARD
Intel 486 CPU
RAM
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1975 - 1981
The Altair The Apple I The FloppyDisk
The Hard Disk
MS-DOS
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1981 - 1993
The IBM PC The Compaq portable Computer
The AppleMacintosh
MS-Windows 3.0 The Pentium
Chip
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INTEL PENTIUM PROCESSORS
PENTIUM
PENTIUM II
PENTIUM Pro
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The boy walks quickly.
“quickly” is an adverb
because it tells us how
the man walks.
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The boy walks quickly.
A word adding to the
meaning of a verb is called an adverb.
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The boy walks quickly.
Most adverbs are formed by adding ‘ly’ to an adjective.
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brave bravely
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fortunate fortunat
ely
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noisy
noisily
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soft
softly
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skilful
skilfully
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careful
carefully
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anxious anxiously
bitter bitterly
brutal brutally
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careful carefully
fearless fearlessly
noble nobly
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Underline those words which are
not adverbs:
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Underline the adverbs in the
following sentences.
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Underline the adverbs:
In a library we should
talk quietly.