2. 2history.ppt 21-Jan-03
People in early times
used their fingers and made
marks on cave walls to help
themselves remember and
count. They used STICKS and
STONES to keep track of
things.
3. 3history.ppt 21-Jan-03
A counting machine called “ABACUS” , was used by
people in China, Greece, and Middle East to calculate.
Beads were moved back and forth along parallel rods to
add and subtract large numbers. Chinese call it the
“suan pan”, while the Japanese call it “soroban”.
4. 4history.ppt 21-Jan-03
- Scottish landowner known
as a mathematician,
physicist, astronomer and
astrologer.
- invented Napier’s Bones.
1550 - 1617
7. 7history.ppt 21-Jan-03
- English Mathematician
(was one of the world's
great mathematicians)
- invented the slide rule
- introduced the "×" symbol
for multiplication as well as
the abbreviations "sin" and
"cos" for the sine and cosine
functions.
1574 - 1660
9. 9history.ppt 21-Jan-03
- French Mathematician ,
physicist, inventor, writer
and catholic philosopher.
- invented the pascaline
1623 - 1662
10. 10history.ppt 21-Jan-03
Pascal developed a calculator called the "Arithmatique"
or "Pascaline." Pascal's device used a series of toothed wheels,
which were turned by hand and which could handle numbers up
to 999,999.999. Pascal's device was also called the "numerical
wheel calculator" and was one of the world's first mechanical
adding machines.
11. 11history.ppt 21-Jan-03
- German mathematician and
philosopher
- improved Pascal’s invention
- invented the First Calculator
called the Step Reckoner (or
Stepped Reckoner) was a
digital mechanical calculator or
called now the Leibnetz wheel
1646-1716
12. 12history.ppt 21-Jan-03
Step Reckoner or Leibnitz wheel was a digital
mechanical calculator around 1672 and completed in 1694. The
name comes from the translation of the German term for its
operating mechanism; staffelwalze meaning 'stepped drum'. It
was the first calculator that could perform addition, subtraction,
multiplication and division.
13. 13history.ppt 21-Jan-03
- French silk weaver and
inventor,
- improved on the original
punched card design of
Jacques de Vaucanson's loom
of 1745
- Invented Automatic Loom or
the Jacquard Loom
1752 - 1834
14. 14history.ppt 21-Jan-03
Automatic loom or Jacquard
Loom controlled by punched cards.
The cards controlled the selection
of threads to create a variety of
patterns.
15. 15history.ppt 21-Jan-03
• English inventor
• taught math at Cambridge
University
• invented a viable
mechanical computer
equivalent to modern
digital computers called
the difference and
analytical engine
• Called the Father of
modern computer
1791-1871
16. 16history.ppt 21-Jan-03
- Babbage first computer
- a mechanical device that
could perform simple
mathematical calculations.
- automatic, mechanical
calculator designed to
tabulate polynomial
functions.
17. 17history.ppt 21-Jan-03
- Babbage ‘s second
computer
- used binary system
- punched cards as input
- Ada Lovelace (first
programmer) close
friend of Charles
Babbage
- intended to combine its
numerical qualities as
though they were
letters or other
symbols.
18. 18history.ppt 21-Jan-03
• Countess of Lovelace (more
commonly known as Ada
Lovelace) was a mathematics
prodigy of sorts and a brilliant
woman far ahead of her time in
terms of ideas
• ‘The Enchantress of Numbers’.
• World’s first Programmer
1815-1852
19. 19history.ppt 21-Jan-03
• was an American
statistician
• a mechanical tabulator
based on punched card to
rapidly tabulate statistics
from millions of pieces of
data.
• He was the founder of one
of the companies that later
merged and became IBM.
1860 –1929
20. 20history.ppt 21-Jan-03
- used to count the
number of people who
lived in the US
for more that 50 years.
- used punched card as
an input
21. 21history.ppt 21-Jan-03
• an electrical engineer and physicist
• the original conceptual designer behind
IBM’s Harvard Mark I Computer.
1900 – 1973
• American computer scientist and US
Navy Officer.
• she was one of the first programmers of
the Harvard Mark I computer and deve-
loped the first compiler for a computer
programming language
• she is sometimes referred to as
"Amazing Grace."
23. 23history.ppt 21-Jan-03
• both involved in science and wondered if there was a
faster way to calculate equations
1900 – 1973
JOHN MAUCHLY JOHN PRESPER ECKERT JR.
24. 24history.ppt 21-Jan-03
- World’s first
digital computer
- Massive machine
was world’s first
large-scale
electronic general-
purpose digital
computer
- Filled entire room
& calculate in two
hours
26. 26history.ppt 21-Jan-03
- Made up of silicon
chips.
- Silicon chips are
made up of silicon,
an element found
in sand.
- Allows a computer
to operate faster
27. 27history.ppt 21-Jan-03
- IBM introduced
the 1st
personal
computer
- The smallest type
of computer
designed for a
single user
Pascal was a French mathematician and philosopher. Pascal did considerable research with regard to the pressure of liquids. He explained principle that described how a liquid in a vessel carried pressure equally in all directions. This came to be known as Pascal's Law, and had importance in the field of hydraulics. Pascal's interest in calculating may have come from a desire to assist his father with the numerous calculations required in his job as Superintendent of Taxes. In about 1642, Pascal developed a calculator called the "Arithmatique" or "Pascaline." Pascal's device used a series of toothed wheels, which were turned by hand and which could handle numbers up to 999,999.999. Pascal's device was also called the "numerical wheel calculator" and was one of the world's first mechanical adding machines.