Mathematicians in the 17th century sought to build machines for basic math functions like addition and multiplication. In 1804, Charles Babbage designed the difference engine, an early general purpose computer with a mechanical memory. Generations of computers are defined by their components: first used vacuum tubes and magnetic drums; second used transistors; third used integrated circuits; fourth used microprocessors; fifth uses artificial intelligence.

2. Asearly as the seventeenth century,
mathematicians were trying to create a machine
that could perform basic mathematical functions
such as, addition, subtraction, division and
multiplication.

3. 1804 British inventor, Charles
Babbage, designed an all-purpose
problem-solving machine, the
difference engine, which had a
mechanical memory to store the
results of calculations.

4. Generation of Computer
First Generation
1940-1956: Vacuum Tubes
The first computers used
vacuum tubes for circuitry
and magnetic drums for
memory, and were often
enormous, taking up entire
rooms.
The UNIVAC and ENIAC
computers are first-generation
computing devices.

5. Second Generation - 1956-1963: Transistors
Transistors replaced vacuum
tubes and ushered in the
second generation of
computers. The transistor
was invented in 1947 but did
not see widespread use in
computers until the late 50s.
*smaller,faster and cheaper.

6. Third Generation - 1964-1971:
Integrated Circuits
The development of the
integrated circuit was the
hallmark of the third generation
of computers. Transistors were
miniaturized and placed on
silicon chips, called
semiconductors, which
drastically increased the speed
and efficiency of computers.
First Integrated Circuit

7. Fourth Generation - 1971-Present:
Microprocessors
The microprocessor
brought the fourth
generation of
computers, as
thousands of
integrated circuits
were built onto a
single silicon chip.

8. Fifth Generation of Computer
Fifth generation computing
devices, based on artificial
intelligence, are still in
development, though there are
some applications, such as voice
recognition, that are being used
today.

10. EDUCATION
 Computers are used
in schools for
teaching
 Computers are used
for mathematical
calculation
 Students can do
their work by using
computer

11. BANK
 Computers are used in
banks for storing
information about
different account
holders.
 Computers help in
keeping a record of the
cash.
 Computers help in
giving all kinds of
information regarding
any account in the
bank

12. ENTERTAINMENT
 Computers are used
for playing games,
listening to music and
watching movies.
 Computers are used
for making cartoon
movies and animation
films.
 Computers are used
for making drawings.

13. RAILWAY STATIONS and AIRPORTS
 Computers help in giving
information about ticket
reservations and
bookings.
 Computers help in giving
information about the
arrival and departure
timings of trains and
aeroplanes.
 Computers help in
keeping records of all the
passengers.

14. OFFICE
 Computers are used
to type and print
documents, letters,
etc.
 Computers help in
keeping records of
office employees.
 Computers help in
sending e-mails

15. HOSPITALS
 Computers help in
keeping records of all
the patients in a
hospital.
 Computers help
doctors in controlling
operation theatre
machines.
 Computers help in
doing a number of
medical tests.

16. DEFENCE
 Computers help in
launching of missiles in
defence.
 Computers help in
keeping records of
criminals.
 Computers help in
constructing weapons
and controlling their
functions.
 Computers help in
establishing
communication links
between the soldiers and
their commanders
through satellites.

17. DESIGNING
 Computers help in
designing magazines,
newspapers, books,
advertisment, etc.
 Computers help in
designing buildings,
houses, etc.