communication then & now

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  • 1. Communication Then & NowBusiness Communication

2. CommunicationCommunication is the process whereone person is expressing his or her idea& the other one is listening to the ideabeing expressed by the one who istalking. That is how you definecommunication.Whenthis results to have anunderstanding to both of them, thereforethere is already a communication. 3. Visual CommunicationVisual communication as the namesuggests is communication throughvisual aid & is described as theconveyance of ideas & information informs that can be read or looked upon. 4. The smoke signal It is one of the oldest forms of long-distancecommunication. It is a form of visualcommunication used over long distance. In Ancient China, soldiers stationed along the GreatWall would alert each other of impending enemy attackby signalling from tower to tower. In this way, they were able to transmit amessage as far away as 750 km(470 mi)in just a few hours. 5. Pigeon Post It is the use of homing pigeons to carry messages.Pigeons were effective as messengers due to theirnatural homing abilities. The pigeons were transported to a destination in cages,where they would be attached with messages, thennaturally the pigeon would fly back to its home wheretheowner could read his mail. Pigeons have been used to great effect inmilitary situations. 6. Mail Mail, or post, is a system for transporting letters & othertangible objects: written documents, typically enclosed inenvelopes, & also small packages are delivered todestinations around the world. Anything sent through the postal system iscalled mail or post. A postal service can be private or public, though manygovernments place restrictions on private systems. Since the mid-19th century national postal systems havegenerally been established as government monopolieswith a fee on the article prepaid. 7. Heliograph It is a wireless solar telegraph that signals by flashesof sunlight (generally using Morse code) reflected bya mirror. The flashes are produced by momentarilypivoting the mirror, or by interrupting the beam with ashutter. The heliograph was a simple but effective instrument forinstantaneous optical communication over longdistances during the late 19th & early 20th century. 8. Maritime flag It is a flag designated for use on ships, boats, & otherwatercraft. Naval flags are considered important at sea & the rules &regulations for the flying of flags are strictly enforced. The flag flown is related to the country of registration: somuch so that the word "flag is often used symbolicallyas a synonym for "country of registration". 9. Signal lamp It is a visual signalling device for optical communication(typically using Morse code). Modern signal lamps are a focused lamp which canproduce a pulse of light. In large versions this pulse isachieved by opening & closing shutters mounted in frontof the lamp. 10. Newspaper(Print Media) A newspaper is ascheduled publication containing news of currentevents, informative articles, diverse features,editorials, & advertising Johannes Gutenbergs work on the printing pressbegan in approximately 1436. The invention of printing press led to an entire newera of mass communication. Newspapers,magazines, periodicals etc. This techinique of mass communication diversifiedwith technology & is still the most used medium ofmass communication. By 2007, there were 6,580 daily newspapers in the 11. Timeline Of Printing Press 12. Oral CommunicationOral communication, while primarilyreferring to spoken verbal communication,can also employ visual aids & non-verbal elements to support the conveyanceof meaning.Oral communication includes speeches,presentations, discussions, & aspects ofinterpersonal communication. 13. Horn & Drums A horn is a tapered sound guide designed to providean acoustic impedance match between a sound source& free air. This has the effect of maximizing the efficiency withwhich sound waves from the particular source aretransferred to the air. Conversely, a horn can be used atthe receiving end to optimize the transfer of sound fromthe air to a receiver. 14. Electrical telegraph It is a telegraph that uses electrical signals, usuallyconveyed via telecommunication lines or radio.The electromagnetic telegraph is a device for human-to-human transmission of coded text messages. It is the first form of electrical telecommunications. Later electrical telegraph networks permitted people &commerce to almost instantly transmit messages acrossboth continents & oceans. 15. Telephone The telephone, colloquially referred to as a phone, isa telecommunications device that transmits & receivessounds, usually the human voice. They are a point-to-point communication system to allowtwo people separated by large distances to talk to eachother. Developed in the mid-1870s by Alexander Graham Bell. The telephone has long been considered indispensableto businesses, households & is now one of the mostcommon appliances in the developed world. 16. Photophone The photophone (also known as a radiophone) isa telecommunications device which allowed forthe transmission of both articulated sounds & normalhuman conversations on a beam of light. The device was a precursor to fibre-opticcommunications that came into widespread use duringthe 1980s. 17. Radio Radio is the transmission of signals through free spaceby electromagnetic waves with frequencies significantlybelow visible light, in the radio frequency range, fromabout 3 kHz to 300 GHz. These waves are called radiowaves. Electromagnetic radiation travels by means of oscillatingelectromagnetic fields that pass through the air &the vacuum of space. 18. Advanced ElectricalSignals 19. Television Television: (TV) is a telecommunication medium fortransmitting & receiving moving images that canbe monochrome (black-and-white) or coloured, with orwithout accompanying sound. Commercially available since the late 1920s, thetelevision set has become commonplace in homes,businesses & institutions, particularly as a vehicle foradvertising, a source of entertainment & news. 20. Timeline Of Televisions 2012 21. Videophone Videophone is a telephone with a video display,capable of simultaneous video & audio forcommunication between people in real-time. It provided the first form of video telephony, later tobe followed by videoconferencing, webcams &finally HD telepresence. Modern examples of videophones Skpye (Microsoft),Facetime (Apple) etc. 22. Computer Network Itisacollection of computers&other hardware components interconnected bycommunication channels that allow sharing ofresources & information. Networks may be classified according to a widevariety of characteristics, such as the medium usedto transportthedata, communicationsprotocol used, scale, topology & scope. 23. Intranet Intranet is a computer network that uses InternetProtocoltechnologytoshare information,operational systems, or computing services withinan organization. The term is used in contrast to internet, a networkbetween organizations & instead refers to a networkwithin an organization. The objective is to organise each individualsdesktop with: minimal cost, time & effort to be moreproductive, cost efficient, timely, & competitive. 24. Mobile Phones A device that can make & receive telephonecalls over a radio link moving around a widegeographic area. It does so by connecting to a cellular networkprovided by a mobile phone operator, allowingaccess to the public telephone network. The first hand-held mobile phone was demonstratedbyDr Martin Cooper of Motorola in 1973 In 1983, the DynaTAC 8000x was the first to becommercially available. From 1990 to 2011, worldwide mobile phonesubscriptions grew from 12.4 million to over 5.6 25. 1st Generation of wireless telephone. They used Analog telecommunications standards introduced in the1G 1980s until replaced by 2G. Benefits of 2G networks over their predecessors were that phone conversations were digitally encrypted; 2G systems were significantly more efficient and 2G introduced data services for2G mobile, starting with SMS text messages It introduced Mobile TV, Video on demand, Video Conferencing, Telemedicine, Location-based services, Global Positioning System3G (GPS) 4G system provides mobile ultra-broadband Internet access. Conceivable applications include amended mobile web access, IP4G telephony, gaming services, HD/3D Mobile TV & video conferencing. 26. Satphone Satellite telephone: satellite phone, or satphone is atype of mobile phone that connects toorbiting satellites instead of terrestrial cell sites. Theyprovide similar functionality to terrestrial mobiletelephones; voice, short messaging service & low-bandwidth internet access are supported through mostsystems. 27. Fax Fax is the telephonic transmission of scanned printedmaterial (both text & images), normally to a telephonenumber connected to a printer or other output device. The original document is scanned with a fax machine (,which processes the contents as a single fixed graphicimage, converting it into a bitmap, & then transmitting itthrough the telephone system. The receiving faxmachine reconverts the coded image & prints a copy. 28. InternetThe Internetis aglobalsystem ofinterconnected computer networks that use thestandard Internet protocol suite to serve billions ofusers worldwide. It is a network of networks that consists of millionsof private, public, academic, business, & governmentnetworks, of local to global scope, that are linked bya broad array of electronic, wireless & opticalnetworking technologies. The Internet carries an extensive range ofinformation resources & services, such as the inter-linked hypertext documents of the World WideWeb (WWW) & the infrastructure to support email. 29. E-Mail Electronic mail: al