Technology in Communication • In the modern times, Communication and Technology are very closely related. • It has become impossible for institutions to run without the modern technology. • Telephone, Television and Internet have become an integral part of day to day life.
The Milestones ofTechnology in Communication1 Telecommunication2 Invention of Radio3 Invention of Television4 Invention of Computer5 Internet6 Wireless technology
Telecommunication• Telecommunications involves the use of electrical devices such as the telegraph, telephone, and teleprinter, as well as the use of radio and microwave communications, as well as fiber optics and their associated electronics, plus the use of the orbiting satellites and the Internet.• The non-electric telegraph was invented by Claude Chappe in 1794.• In 1809, a crude telegraph was invented in Bavaria by Samuel Soemmering.
Transformation of Telephone 1930 (German rotaryThe tin can telephone, or 1896 (Swedish telephone)lovers phone Telephone)
Transformation of TelephoneTouch Pad tone dialing Cordless Phone Wireless Local Loop(1960s.) (1965 ) (WLL) (1990s)
Radio• It started with the discovery of "radio waves" - electromagnetic waves that have the capacity to transmit music, speech, pictures and other data invisibly through the air.• Guglielmo Marconi, an Italian inventor, proved the feasibility of radio communication. He sent and received his first radio signal in Italy in 1895.• By 1899 he flashed the first wireless signal across the English Channel and two years later received the letter "S", telegraphed from England to Newfoundland. This was the first successful transatlantic radiotelegraph message in 1902.
Evolution of RadioFM/AM (1897-1920) Satellite Radio (1992) Internet (1994) 1 This is the most primitive 2 Here the Radio is not a free 3 Internet Radio is totally type of Radio where the service, it is just like the computer based and signals are received by DTH service of Television, there is no separate the Radio set. There is no the customer will need to device for accessing the subscription required and subscribr to the provider content. For example. (such as World Space it’s a free service. www.onlineradios.in Radio) and the signals can Spotify be received in any part of the country. It has not been widely accepted. Your own footer Your Logo
Television• As a 23-year-old German university student, Paul Nipkow proposed and patented the first electromechanical television system in 1884.• In 1926, just a little after Jenkins, a British inventor known as John Logie Baird, was the first person to have succeeded in transmitting moving pictures.
The transformation of TelevisionCABLE (1948) DTH (Direct To Home) (1977) INTERNET TV (1998) 1 The channels were 2 It eliminated the need for 3 tInternet TV is yet to be received by the use of a Cable Operator and fully developed in cables. A satellite receiver long cables, because Countries like India. The would be placed by the people could set up their Television is connected to Cable Operator at the TV own dish and connect it broadband Internet and centre and all the house to their Television, via set live video streaming is holds would be top box. This has made received by the television. connected by the use of TV viewing hassle free. Eg. Tvonline by Greek cables. And the digital encoding film Director Angelos made the picture quality Diamantoulakis much more superior. Your own footer Your Logo
Computer• Computer is any device which aids humans in performing various kinds of computations or calculations.• The simplest form of a computer was an “Abacus”, which helped in doing arithmetic calculation.• Possibly the most significant of those shifts was the invention of the Graphical User Interface (GUI).
First Generation (1940s – 1950s) Second Generation (1955 – 1960)(ENIAC) Third Generation (1960s)
Fourth Generation (1971 – present)First Generation of Second Generation Graphical User InterfaceMicrocomputers Microcomputers (GUI) (1968 to present)(1971 – 1976) (1977 – present)
Portable Computers (1981)Laptops Ultrabooks Tablet PC(Eg. Apple powerbook) (Eg. HP envy) (Eg. Apple Ipad)
Internet• The Internet was the result of some visionary thinking by people in the early 1960s who saw great potential value in allowing computers to share information on research and development in scientific and military fields.• The Internet, then known as ARPANET, was brought online in 1969 under a contract let by the renamed Advanced Research Projects Agency (ARPA) which initially connected four major computers at universities in the South Western US (UCLA, Stanford Research Institute, UCSB, and the University of Utah).
A) Download• In computer networks, to download means to receive data to a local system from a remote system, or to initiate such a data transfer.• Examples of a remote system from which a download might be performed include a web server, FTP server, email server, or other similar systems.
B) Streaming media (1996) • Streaming media is multimedia that is constantly received by and presented to an end-user while being delivered by a provider. • “To stream", refers to the process of delivering media in this manner; the term refers to the delivery method of the medium rather than the medium itself.
Wireless Technology (FSO) (1960s) •Free Space Optical (FSO) networks are capable of providing low cost fibre-like quality, reliability, and capacity, without requiring buried optical fibre cabling. •Accordingly, they are well suited for ultra broadband last-mile business and residential services, and for cellular and WiFi backhaul.
Wireless Technology 1991 1994 19th Century Infra red Based on power