Definition:

A communication system is a

technology system used for

transmission of information to

link a sender and to reciever

through a medium may be

passed to each other is called a

communication.

AMIR SHAIKH

MANALI SHIRKE

DIPALI PATIL

POOJA SINALKAR

SHWETA TAWHARE

PRAJAKTA SHINDE

NANDINI CHOUGHULE

ANALOG COMMUNICATION

DIGITAL COMMUNICATION

OPTICAL COMMUNICATION

WIRELESS COMMUNICATION

MOBILE COMMUNICATION

SATELLITE COMMUNICATION

IT IS A METHOD OF STORING &

TRANSMITTING INFORMATION USE

OF DISTINCT ELECTRONIC OR

OPTICAL PULSES THAT REPRESENTS

THE BINARY DIGITS 0&1

Wireless is a term used to describe

telecommunications in which electromagnetic

waves (rather than some form of wire) carry the

signal over part or all of the communication

path. Some monitoring devices, such as

intrusion alarms, employ acoustic waves at

frequencies above the range of human hearing;

these are also sometimes classified as wireless.

Wireless can be divided into:

Fixed wireless -- the operation of wireless devices or

systems in homes and offices, and in

particular, equipment connected to the Internet via

specialized modems

Mobile wireless -- the use of wireless devices or

systems aboard motorized, moving vehicles;

examples include the automotive cell phone and PCS

(personal communications services)

Portable wireless -- the operation of

autonomous, battery-powered wireless devices or

systems outside the office, home, or vehicle;

examples include handheld cell phones and PCS units

IR wireless -- the use of devices that convey data via

IR (infrared) radiation; employed in certain limited-

range communications and control systems

Advantages: Telephone: We are able to contact any

person at any time because of this it is much faster than

the older methods of writing a letter. As it is electronic it

wont take your much of money nor will it waste your tim

eand message will get across in time. Talking of cell

phone its far too better than a telephone or rather call a

landline because you can carry a cell phone { thats why

its called a mobile} you can call and receive phone calls

wherever you are irrespective of time , place and so on.

Internet helps you to access and know about teh world

you are living in to know the facts about other

countries, and to use it for knowledge based works its

also used as an entertainer you can download whatever

you want you can reserve tickets for traveling , can do

shopping and banking its a very good tool made by a

human .

Disadvantages: Telephone: We cant take it wherever we go

so we will not be able to receive phone calls , it occupies lot

space , needs lots of connections.

Webcam: It's liking spoiling one's privacy a very bad thing so I

never use it even though I have it.

Internet: A very good tool for hackers, robbers and cyber

scam group. Because of this they are accessed to all hte

groups of people and it may lead to bank robbing.

These are very good things especially webcam and internet .

It depends on the mindset of a person whether he uses it for

good or bad!!