\ SCARSDALE INTERNATIONAL SCHOOL History of Computers 4-Z
HISTORY OF COMPUTERS
Dec 13, 2014
OUR PRESENTAITION IS ABOUT CALCULATING IN THE PAST AND THE HISTORY OF COMPUTERS
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SCARSDALE INTERNATIONAL SCHOOL
History of Computers4-Z
COUNTING IN THE PAST
Long ago there were problems with calculating
so people had to count by their fingers but then
they thought about calculating by stones and
pebbles.
ABACUS
The abacus was the first device to calculate it was
a mechanical device. About 5000 years ago it was
made by a Chinese.
NAPIER'S BONE
It was called Napier's bone it was used to multiply
big or any kind o f numbers it was built by
mathematician John Napier.
PASCALINE
It was called pascaline it looked like a shoe box but
from inside it looked like a piano a man named
Blaise Pascal. It was made for computing.
ANALYTICAL MACHINE
The analytical machine was a machine that could
tell the answer of the big calculations a man named
Charles Babbage built it in 1835.
TABULATING MACHINE
The tabulating machine was built so people could
find out the population of their country a man named
Herman Hollerith built it
By: Hassan Irfan And
Abdullah Amir
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