10. The men that came up with all those
formulas and theories that we have
to know.
11. Charles Babbage is
created with inventing
the first mechanical
computer that
eventually led to more
complex designs. His
varied work in other
fields has led him to be
pre-eminent among the
many polymaths of his
century.
12.
13. English scientist who
helped convert
electricity into a
format that could be
easily used. Faraday
discovered benzene
and also invented an
early form of the
Bunsen burner.
14. He is the author of a large
number of inventions, but
the most well-known one is
the electric bulb. Among
other discoveries of
Thomas Edison there are
telegraph devices,
phonograph, carbon
transmitter, direct current
generator, universal
electric motor, and more.
15. Tim berners-lee
invented the World
Wide Web (WWW) in
1989.He founded and
directs the World Wide
Consortium the forum
for technical
development of web.
16. American entrepreneur
and developer. Jobs
helped revolutionise
personal computer
devices with the iPod,
iPad, macbook and
iPhone. He is credited
with inventing the new
wave of hand-held
personal computer
devices.
17. Dr Martin Cooper, a
Motorola researcher
and executive made
the first phone call
from a handheld
mobile phone on
April 3, 1973. This
ushered in a new
dawn of
communication.
22. 3G WIRELESS SYSTEM 4G WIRELESS SYSTEM
WIRLESS MODELS OF 3G & 4G
23. Microprocessor:
Integrated circuit that
Contains all the functions
of a computer’s central
processing unit .
Integrated Circuits:
Small chips of material
incorporating the functions of
several separate components
of a conventional electrical
circuit.
24.
25. * 1969
* Clock speed : 108 KHz
* Number of transistors:
2300
* 4-bit register and 4-bit data bus.
The world first microprocessor
26. * 1978
* Clock speed : 4.47 MHz
* Number of transistors:
29000
* 16-bit register and data bus.
27. * 1993
* Clock speed: 66 MHz
* Number of transistor:
3,300,000
* 32-bit register and data bus.
31. A set of programs that manage computer
hardware resources and provide common
services for application software
Most important system software in computer
system
NOTE: User cannot run an application
program on computer without OS
eg. Android, Mac OS X, Microsoft Windows
33. The most important
piece of software on
any computer is the
operating system. The
operating system gives
the framework upon
which all other services
and applications run.
The majority of home
users use a Windows
based machine. Most
of today’s applications
and games are
designed to run solely
on Microsoft systems.
51. Electronic gadgets-part of our daily life.
Overcome many difficulties-make tasks easy.
Advantages as well as disadvantages
associated with electronics.
Precautions must be taken while using
technological equipments.
New technologies-which can
overcome present
disadvantages
52. This is really only the beginning - changes
in electronics seem to be happening almost
daily!
