Transcript History of Calculator

HISTORY OF CALCULATOR
By Kyumin (Louis) Kim
BEFORE CALCULATORS

In 2000 BC, the Sumerians and Egyptians used the Abacus,
bones to tally items, and pebbles and counting boards.
THE START OF CALCULATORS:
CALCULATING MACHINES IN 1640’S
-
The first calculating
machines were made by
Blaise Pascal in 1649.
Blaise Pascal was the first to
receive a patent which was
the Royal Privilege.
He was granted exclusive
rights to make and sell the
calculating machines in
France.
FIRST COMMERCIALLY SUCCESSFUL
CALCULATING MACHINE
 About
170 years later, the first commercially
successful calculating machines was the
Arithmometer. The Arithmometer was allowed
to sell from 1820 by Thomas de Colmar.
EARLY ELECTRONIC CALCULATORS
The Casio Computer Company’s
Model 14-A on the right was
released in 1957.
Early electronic calculators were
desk-size, built with vacuum tubes
and later with transistors.
TEXAS INSTRUMENTS COMPANY
In 1958, Texas Instrument
engineer Jack Kilby made the
first working integrated circuit.
After 9 years, Texas Instrument
engineers made the first
handheld electronic
calculators.
PROGRAMMABLE CALCULATORS
- In 1974, HP-65 was
the first pocket
programmable
calculator.
- Later on, more
efficient
programmable
calculators were on
sale.
CALCULATORS ALLOWED IN
SCHOOLS
 In
the 1970’s, calculators were brought to
classrooms.
 According
to Science News articles, in 1975, 1
in 9 people had calculators.
 Connecticut
calculators.
was the first state to require
CALCULATORS IN 2015
• Now, most countries
make students use
calculators for studying.
• The invention of
calculators made our
lives much more
convenient.
REFERENCES:

https://www.wikiwand.com/en/Calculator

http://hackeducation.com/2015/03/12/calculators/
Images:

http://www.cma.ph/images/uploads/article_images/aabacus1.jpg

http://stoneforest.net/wp-content/uploads/2012/01/MexicanBeach-Pebbles-1-2_2.jpg

https://s3.amazonaws.com/audreywatters/calc_pascal.jpg

http://www.ti.com/corp/docs/company/history/timeline/eps/196
0/images/67-calc.jpg

https://encryptedtbn0.gstatic.com/images?q=tbn:ANd9GcSN0wHA48Fmk3NoH_lIf
XPzP6QOvP6BqG5YPtrEDs7aXsykCkscNYQvcXo