it is about computers history so, have fun with wachting

1. History
of
computer
Written
By:
Seungri
Scarsdale school

2. .The Abacas.
The abacas was the first calculating machine. It was
developed by the Chinese about 5000years ago. It
was built out of wood and beads. It could be held and
carried around easily . Abacus was so successful that
ita use spread from China to many other countries.
The abacus is still in use in some countries today.

3. In 1617, John Napier, a mathematician from Scotland,
invented calculating rods called Napier’s Bones. The
rods were used to help people multiply large
numbers. By moving the rods around and reading
rows of numbers.
.Napier’s Bones.

4. Some years later, in 1642, a young French Mathematician named
Blasé Pascal was working in his father’s office. His job was to add
long columns of tax figures. Doing all this adding was boring
and time-consuming. So, Pascal came up with a way to get a job
done faster. He invented a machine, the size of a shoe box, that
could add and subtract numbers.
.Pascal’s Arithmetic Machine.

5. The first calculating machine that can be truly called a
computer was invented in England by Charles Babbage
in 1835. Babbage’s dream was to build a machine that
could do no more than calculate big numbers. It would
receive instructions. It would process and store
information. It would print the results. He planned to
call it the Analytical Engine.
Analytical Engine

6. This machine was invented in 18880 to come up with
the better way to count the population.
Tabulating Machine

7. .Thank you for watching.