Telecommunication Essay -- Technology Computer Networks Essays

Telecommunication1. IntroductionComputer and reverberate networks inflict a gigantic impact on right awayssociety. From letting you call bathroom in Calgary to letting you make a withdrawat your informal ATM mould they control the flow of information. But todayscomplicated and expensive networks did not start out big and complicated butrather as a wire and two terminals back in 1844. From these simple networks tothe communication giants of today we will look at the evolution of the networkand the basis on which it functions.2. The Beginnings2.1. stop Dot Dot Dash Dash Dash Dot Dot DotThe network is defined as a system of lines or structures that cross.In telecommunications this is a community of peripherals together so that theycan exchange information. The front such exchange of information was on May 24,1844 when Samuel Morse move the famous message What hath God wrought from theUS Capitol in Washington D.C. crosswise a 37 mile wire to Baltimore using thetelegraph. The te legraph is essentially an electromagnet connected to a outpouringvia a switch. When the switch is down the current flows from the batterythrough the key, down the wire, and into the sounder at the other end of theline. By itself the telegraph could express only two states, on or off. Thislimitation was eliminated by the fact that it was the duration of the connectionthat determined the dot and dash from each(prenominal) other being short and longrespectively. From these combinations of dots and dashes the Morse code wasformed. The code include all the letters of the English alphabet, all thenumbers and several punctuation marks. A variation to the telegraph was areceiving module that Morse had invented. The module consisted of amechanically operated pencil and a roll of paper. When a message was certainthe pencil would draw the corresponding dashes and dots on the paper to bedeciphered later. many inventors including Alexander Bell and Thomas Edisonsought to revolutionize the t elegraph. Edison devised a deciphering machine.This machine when receiving Morse code would print letters corresponding to theMorse code on a roll of paper hence eliminating the need for decoding the code.2.2. Mr. Watson, semen HereThe first successful teleph whiz was invented by Alexander Graham Bell.He along with Elisha Gray fought against t... ... they use differentaddressing protocols, only routers may be used. During these times MANs(Metropolitan Area Networks) ar in use and development today. These userouters that are connected preferably via a fiber optic cable, to create onelarge network.5.2. Pluto Calling EarthAny networks larger than 1000m typically commit on telephone digital linesfor data transfer. These networks are called Circuit Switched digital Networks .Circuit Switched Digital Networks utilize a switching matrix at the aboriginaloffice of a telephone company that connects local calls to long durationservices. The Telephone companies now offer dial up circuits with signalingrates of 56, 64, and 384 kilobits per here and now as well as 1.544 megabits persecond. Another type of local area network to LAN connections are piece of land switching networks.These are services that a network router calls up on a digital line. Theyconsist of a group of packet switches that are connected via intraswitch trunks(usually fiber optic) that relay addressed packets of information among them.Once the packet reaches the destination packet switch, it sends it via anotherdigital connection to the receiving router. Telecommunication Essay -- Technology Computer Networks Essays Telecommunication1. IntroductionComputer and telephone networks inflict a gigantic impact on todayssociety. From letting you call John in Calgary to letting you make a withdrawat your friendly ATM machine they control the flow of information. But todayscomplicated and expensive networks did not start out big and complicated butrather as a wire and two terminals back in 1844. From these simple networks tothe communication giants of today we will look at the evolution of the networkand the basis on which it functions.2. The Beginnings2.1. Dot Dot Dot Dash Dash Dash Dot Dot DotThe network is defined as a system of lines or structures that cross.In telecommunications this is a connection of peripherals together so that theycan exchange information. The first such exchange of information was on May 24,1844 when Samuel Morse sent the famous message What hath God wrought from theUS Capitol in Washington D.C. across a 37 mile wire to Baltimore using thetelegraph. The telegraph is basically an electromagnet connected to a batteryvia a switch. When the switch is down the current flows from the batterythrough the key, down the wire, and into the sounder at the other end of theline. By itself the telegraph could express only two states, on or off. Thislimitation was eliminated by the fact that it was the duration of the connectionthat determined the dot an d dash from each other being short and longrespectively. From these combinations of dots and dashes the Morse code wasformed. The code included all the letters of the English alphabet, all thenumbers and several punctuation marks. A variation to the telegraph was areceiving module that Morse had invented. The module consisted of amechanically operated pencil and a roll of paper. When a message was receivedthe pencil would draw the corresponding dashes and dots on the paper to bedeciphered later. Many inventors including Alexander Bell and Thomas Edisonsought to revolutionize the telegraph. Edison devised a deciphering machine.This machine when receiving Morse code would print letters corresponding to theMorse code on a roll of paper hence eliminating the need for decoding the code.2.2. Mr. Watson, Come HereThe first successful telephone was invented by Alexander Graham Bell.He along with Elisha Gray fought against t... ... they use differentaddressing protocols, only routers may be used. During these times MANs(Metropolitan Area Networks) are in use and development today. These userouters that are connected preferably via a fiber optic cable, to create onelarge network.5.2. Pluto Calling EarthAny networks larger than 1000m typically rely on telephone digital linesfor data transfer. These networks are called Circuit Switched Digital Networks .Circuit Switched Digital Networks utilize a switching matrix at the centraloffice of a telephone company that connects local calls to long distanceservices. The Telephone companies now offer dial up circuits with signalingrates of 56, 64, and 384 kilobits per second as well as 1.544 megabits persecond. Another type of LAN to LAN connections are packet switching networks.These are services that a network router calls up on a digital line. Theyconsist of a group of packet switches that are connected via intraswitch trunks(usually fiber optic) that relay addressed packets of information between them.Once the packet reaches t he destination packet switch, it sends it via anotherdigital connection to the receiving router.