The history of computers began with early counting devices like the abacus. Over thousands of years, inventors created mechanical devices to help with calculations, including the Pascaline calculator and the Leibnitz calculator. The Jacquard loom used punch cards to automate weaving patterns. Charles Babbage designed analytical engines to perform calculations, and Herman Hollerith invented the punch card tabulator. Early electronic computers included the Mark 1, ENIAC, and EDVAC. Today's computers range from powerful supercomputers to personal computers like desktops, notebooks, and personal digital assistants.

1. History
of
Computer

2. How di d i t st ar t ?
Long time ago, people
had to work very hard to
have something they
want. They always look
for ways to make their
work faster and easier.

3. Since man is born with
intelligence, he thought of
ways that would make things
easy for him. One of the
problems encountered by man
was counting the things he
had. Because of this, he
invented something that could
help him count fast and easy.

4. Ear l y C put i ng D
om evi ces
The Abacus
About 4,000 years ago, the Chinese
invented the ABACUS. It is an adding
tool that can help can you add &
subtract numbers by moving beads
back & forth on rods. The abacus was
one of the earliest counting devise
invented to help man solve his
counting problems.

5. The Abacus

6. The Pascal i ne
C 1642, Blaiseor
Inal cul at Pascal, a French
mathematician, invented the Pascal
calculator. This device, also known as
the Pascaline, operated 8 movable
dials, which could add numbers up to
8 figures long. It was used to perform
simple arithmetic calculations. This
device was limited to addition &
subtraction only.

7. The Pascal i ne C cul at or
al

8. Lei bni t z C cul at or
al
In 1673, Gottfried Leibntiz, a
German mathematician &
philosopher, enchanced the
Pascaline by creating a device
that could also multiply. It can
even find the square root of
number. The device was called
the Leibnitz Calculator/ machine.

9. Lei bni t z
C cul at or / M
al achi ne

10. Jacquar d’ Aut om i c
s at
Loom Jacquard,
In 1801, Joseph-Marie
a Frenchman, invented the
Jacquard’s loom. Jacquard’s
loom used punch card to
program pattern that were
outputted as woven fabrics by
the loom.

11. Jacquar d’ Aut om i c
s at
Loom

12. El ect r o- Mechani cal C put i ng
om
Devi ces
Difference Engine
In 1822, Charles Babbage, a British
mathematician professor,
invented the Difference Engine.
Powered by steam & as large as a
locomotive, the machine had the
capacity to perform calculations &
print the results.

13. D f f er ence Engi ne
i

14. Anal yt i cal Engi ne
In, 1833, several years after Babbage
worked on the Difference Engine, he
began working on the first general-
purpose digital computer, which he
called the Analytical Engine. This
steam-powered engine outlined the
basic elements of today’s modern
general-purpose computer and was a
breakthrough concept.

15. Anal yt i cal Engi ne

16. Electronic
Computing Devices

17. H l er i t h’ Tabul at i ng
ol s
Machi ne American
In 1889, Herman Hollerith, an
inventor, invented the Hollerith’s
Tabulating Machine . The machine was a
punch card reader & had the capacity to
store & process data. Hollerith brought his
punch card reader into the business world,
founding the Tabulating Machine Company
which later became International Business
Machine (IBM) in 1924.

18. H l er i t h’ Tabul at i ng
ol s
M achi ne

19. M k 1
ar
This all-electronic calculator was
invented by Howard H. Aiken in
1930. This was used to create
ballistic charts for the U.S.
Navy. The Mark 1 is called the
Harvard-IBM Automatic
Sequence Controlled Calculator.

20. M k 1
ar

21. EN AC
I
Between 1943 and 1946, the ENIAC
or the Electronic Numerical
Integrator and Computer was
developed by John Presper Eckert
and John Mauchly. This general
purpose computer computed at a
speed 1,000 times faster than the
Mark 1.

22. EN AC
I

23. EDVAC
Between 1947 & 1948, the EDVAC
or the Electronic Discrete Variable
Automatic Computer was invented
by John von Neumann. This
invention had a Central
Processing Unit (CPU), which
allowed all computer functions to
be coordinated through a single
source.

24. EDVAC

25. U I VAC 1
N
The 1948, the UNIVAC or the
Universal Automatic Computer was
manufactured by Remington
Rand Corporation. This became
one of the first commercially
available computers to benefit
from the various advances in
computing.

26. U I VAC 1
N

27. Computers
Today

28. Super com er s
put
Supercomputers are the most
powerful computers made.
Supercomputers are used to
process huge amount of data
for complex processes such as
nuclear fission.

29. Super com er s
put

30. M nf r am C put er s
ai e om
Mainframe computers are the
largest among the computers
in use today. Mainframe
computers are used where
many people in large
organizations are frequently
accessing similar information.

31. M nf r am C put er s
ai e om

32. Per sonal C put er s
om
Personal Computers are the
most common computers in
use today.
A personal computer can be a
desktop computer, a notebook
or a laptop or a Personal
Digital Assistant.

33. Per sonal C put er s
om

34. N ebook or Lapt op
ot

35. Per sonal D gi t al
i
Assi st ant