it is about how history changes in the feild of cmputers

1. HISTORY OF COMPUTERS
RAAHIM KHAN
SCARSDALE INTERNATIONAL SCHOOL

2. SINCE THE EARLIEAST TIMES PEOPLE USED THEIR
FINGERS SOCOULD TELL THE NUMBER OF
ANIMALS KILLED ON A HUNT. THEY COULD SHOW
THE NUMBER OF POPLE LIVING IN A DWELLING.
HISTORY OF COMPUTERS

3. THE ABACUS WAS THE FIRST CALCULATING
MACHINE .IT WAS DEVELOPED BY THE CHINESE
ABOUT FIVE THOUSAND yEAR AGO.
The abacus

4. IN 1617, JOhn NAPIER, A MATHEMATICIAN FROM
SCOTLAND, INVENDED CALULATING RODS CALLED
NAPIERS BONES.
Napier Bones

5. Some years, later in 1642 a young mathematician named Blaise
Pascal was working in his fathers office. He invented a machine
called as Pascal’s Arithmetic Machine to do the work more
faster.
Pascal's

6. The first calculating machine that can be truly called a
Computer was invented in England by Charles Babbage
in 1835.
Babbage engine

7. Herman Hollerith worked at the Census Bureau in
1880,s.
The Tabulating machine