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2. FIRST
GENERATION
(1937 – 1953)

3.  Known for mathematics ,
Computing
 Was called as the Father
of Modern Day Computing
 He invented fully automatic
computer called as Analytical
Engine in 1830
 Died ion 18 October 1871 (aged 79)
Marylebone ,London
CHARLES BABBAGE
 Born on 26 December 1791 in
London , England

4.  The Analytical Engine was a
proposed mechanical general-
purpose computer designed by
English mathematician Charles
Babbage.
Trial model of a part of the
Analytical Engine, built by
Babbage, as displayed at
the Science Museum
(London)
 The Analytical Engine incorporated an arithmetic logic
unit, control flow in the form of conditional branching
and loops, and integrated memory.
 It was first described in 1837 as the
successor to Babbage's Difference
engine, a design for a mechanical
computer.
ANALYTICAL ENGINE

5. ENIAC was the first Turing-
complete device , and
performed ballistics
trajectory calculations for
the United States Army.
 The machine was huge, weighing
30 tons, using 200 kilowatts of electric
power and contained over 18,000
vacuum tubes, 1,500 relays, and
hundreds of thousands of resistors,
capacitors, and inductors.
 It also had modules to multiply, divide, and square root.
High speed memory was limited to 20 words (about 80
bytes).
It could add or subtract 5000 times a
second , a thousand times faster than
any other machine.
ENIAC

6.  In a vacuum tube is a device
controlling electric current through a
vacuum in a sealed, usually glass,
container.
 The device can be used as an
electronic amplifier a rectifier, an
electronically controlled switch, an
oscillator.
 Vacuum tubes mostly rely on thermionic emission of
electrons from a hot filament or a cathode heated by the
filament. This type is called a thermionic tube or
thermionic valve.
VACUUM TUBE

7. Assorted discrete
transistors. Packages in
order from top to
bottom.
 A transistor is a semiconductor device
used to amplify and switch electronic
signals and electrical power.
 It is composed of semiconductor
material with at least three terminals for
connection to an external circuit.
 A voltage or current applied to one pair of the transistor's
terminals changes the current through another pair of
terminals.
 The transistor is the fundamental
building block of modern electronic
devices.
TRANSISTORS

8. SECOND
GENERATION (1954
– 1962)

9. IBM 7090 operator's
console in 1961, with two
banks of IBM 729 magnetic
tape drives.
They had powerful processing
speed and capacity.
In 1959 IBM shipped the
transistor -based IBM 7090
mainframe which was much
smaller and cheaper.
These were mainly used in
scientific applications.
IBM 7090 MAINFRAME COMPUTER

10. PDP-11 at the bottom
of a racking unit. A
TU56 dual DEC tape
drive is also installed.
 The PDP-11 was a series of 16-bit
minicomputers sold by Digital
Equipment Corporation (DEC) from
1970 into the 1990s .
 In total, around 600,000 PDP-11s of
all models were sold.
 The PDP-11 was easier to program
than its predecessors through the
additional general-purpose registers.
PDP 11 MINI COMPUTER

11. THIRD
GENERATION (1963
– 1972)

12.  Born on 8 November 1923 in
U.S. , Jefferson City ,Missouri
 Fields like Physics , Electrical
Engineering
 First integrated circuit (IC)
was invented by him in 1958
 For which he won the 2000
Nobel Prize in Physics
 Died on 20 June ,2005 ( aged
81) Dallas ,Texas U.S.
JACK KILBY

13. FOURTH
GENERATION (1973
– 1984)

14.  VLSI considerably reduced
the size of the computers , as
its processor was a small
chip.
 Personal Computers (PCs)
ere introduced around this
time powered by 8bits
processors.
THE MICRO (PERSONAL) COMPUTER

15. FIFTH GENERATION
(1985 – 1990)

16.  The 16bits microprocessors were
now capable of handling large data at
very high speed.
 The fifth generation of computers
had millions of transistors on a single
chip.
 In addition , there was an
increasing use of computer networks
and single – user workstations.
THE MICRO (PERSONAL) COMPUTER

17. SIXTH GENERATION
(1990 ONWARDS)

18.  They are also sometimes called
notebook computers.
 As portable computers became smaller, lighter, cheaper, and
more powerful and as screens became smaller and of better
quality, laptops became very widely used for a variety of
purposes.
 A laptop is a portable personal
computer with a clamshell form factor,
suitable for mobile use.
 Laptops are commonly used in a variety
of settings, including work, education,
and personal multimedia.
NOTEBOOK COMPUTER

19.  Most handheld devices can also be equipped with Wi-Fi,
Bluetooth, and GPS capabilities that can allow connections to
the Internet and a microphone headset.
 A mobile device is a input small,
handheld computing device, typically
having a display screen with a miniature
keyboard and weighing less.
 A handheld computing device has an
operating system (OS), and can run
various types of application software,
known as apps.
HANDHELD DEVICE

20. THE END