Computers HHW

8/15/2019 Computers HHW

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Internet and Trends in

Communication Technology

Made by: Harshit Gupta10-C


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Communication

Technology - Meaning● Communication technology is range of

technologies used for gathering, storing,retrieving, processing, analyzing, and

transmitting information. This includes personalcomputers, mobile phones, the internet etc.● It refers to electronic systems used for

communication between individuals or groups. Itfacilitates communication between individuals orgroups who may be at di erent physicallocations. Communication technology mayinclude systems such as telephones, fax, radioand e-mail.


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Technology in communication● In the modern times,

communication andtechnology are very closelyrelated.

● Telephone, television andinternet have become anintegral part of day to daylife.

●

It has become impossible forinstitutions to run without themodern technology.


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INTERNET The Internet is a global systemof interconnected computernetworks that use the standardInternet protocol suite (TCP/IP)to link several billion devices

worldwide. It is a network ofnetworks that consists ofmillions of private publicacademic business andgovernment networks of localto global scope that are linkedby a broad array of electronicwireless and optical networkingtechnologies.


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The internet then known as !"P!#$T wasbrought online in %&'& under a contract led by

the renamed !dvanced "esearch Pro ects !gency which initially connected ma or

computers at universities in the south western*+.It was a result of some visionary thinking by

people in the early %&',s.They saw great

potential value in allowing computers to shareinformation on research and development.


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TELEC MM!"IC#TI "● Telecommunications involves the use of electrical

devices such as the telegraph, telephone, andteleprinter, as well as the use of radio andmicrowave communications, as well as ber optics

and their associated electronics, plus the use of theorbiting satellites and the Internet● The non-electric telegraph was invented by Claude

Chappe in !"#$.● In !%, a crude telegraph was invented in 'avaria

by (amuel (oemmering.


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Computer ● ) computer is a general purpose device that

can be programmed to carry out a set ofarithmetic or logical operations

automatically. (ince a se*uence ofoperations can be readily changed, thecomputer can solve more than one +ind ofproblem.

● The simplest form of a computer was anabacus, which helped in doing arithmeticcalculations.

● ossibly the most signi cant of those shiftswas the invention of the raphical ser


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OLDEST & LATEST

COMPUTERS


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$i%ersity in physicalin&rastructure and high speed

broadband net'or(s

Developments in the diversity of physicalinfrastructure and broadband speed signal morechoice, variety and increasing bandwidth. There

are multiple distribution channels for professionalcontent- mobile, IP-based, terrestrial and satellite broadcasting. Network access arrangements arelikely to be a mi of open or shared access and

closed systems.


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%.Broadband - It is aclass of datatransmissiontechnologies,

including optic - bre,x1(2, 3C4 cable andwireless, o ering a

data rangesigni cantly higherthan narrowband

services.


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ther e)amples o&di%ersity in physical

in&rastructures-● Digital broadcasting● Smart radio systems- cognitive and

software defined radio● Sensor networks● Mesh networks


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*ireless Technology ● 5ireless communication is the transfer of

information between two or more points that arenot connected by an electrical conductor.

● The most common wireless technologies useradio. 5ith radio waves distances can be short,such as a few meters for television or as far asthousands or even millions of +ilometers fordeep-space radio communications. Itencompasses various types of xed, mobile, andportable applications, including two-way radios,cellular telephones, personal digital assistants/ 1)s0, and wireless networ+ing.


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Radio

It started with the discovery of 6radio waves6 -electromagnetic waves that have the capacity totransmit music, speech, pictures and other datainvisibly through the air.

uglielmo 7arconi, an Italian inventor, proved thefeasibility of radio communication. 3e sent andreceived his rst radio signal in Italy in !%#8.

'y !%## he 9ashed the rst wireless signal acrossthe :nglish Channel and two years later received theletter 6(6, telegraphed from :ngland to;ewfoundland. This was the rst successfultransatlantic radiotelegraph message in !#&


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ldest and latest +adio


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Tele%ision

It is a telecommunication medium that isused for transmitting and receiving movingimages and sound. In a broader sense,television can also refer to images that aremonochrome (black-and-white) or color, orimages with or without accompanying sound.

Television may also refer speci cally to atelevision set, television program, ortelevision transmission.


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ldest and latest

Tele%ision


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obile devices and social media are

reshaping how and when we communicatewith one another using the tools and deviceswe use both in business and private life. Theway we interact with computers is no longer

restricted to graphical interfaces andkeyboards, but it is being e!tended throughtouch screens, voice interfaces and dialogue

systems, and mobile devices withaccelerometers that tell the device how it is

held by the user.


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Presentation made by -

Harshit Gu ta !"-C


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Computers HHW