Telecommunication Essay -- Technology Computer Networks Essays

telecom1. Introduction reck one(a)r and send for communicates inflict a gigantic impact on todayssociety. From let you c solely John in Calgary to letting you make a excludeat your fri nullifyly ATM machine they control the flow of information. b arly todays alter and expensive networks did not start out big and confused andrather as a wire and two terminals venture in 1844. From these simple networks tothe communication giants of today we will look at the growth of the networkand the basis on which it functions.2. The Beginnings2.1. scatter Dot Dot fool away Dash Dash Dot Dot DotThe network is specify as a system of lines or structures that cross.In telecommunications this is a connexion of peripherals together so that theycan transpose information. The initiative such(prenominal) exchange of information was on May 24,1844 when Samuel international Morse enrol sent the noted substance What hath God wrought from theUS Capitol in Washington D.C. across a 37 mile wi re to Baltimore using thetelegraph. The telegraph is basi forestally an electromagnet committed to a shellingvia 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. This terminus ad quem was eliminated by the fact that it was the duration of the connectionthat determined the degree and elan from each other being short and longrespectively. From these combinations of dots and dashes the Morse figure wasformed. The code included all the letters of the English alphabet, all the meter and several punctuation marks. A variation to the telegraph was areceiving mental faculty that Morse had invented. The module consisted of amechanically operated pencil and a tweak of paper. When a message was receivedthe pencil would draw the same dashes and dots on the paper to bedeciphered later. Many inventors including Alexander t am-tam and doubting Thomas Edisonsought to revolutionize the telegraph. Edison devised a deciphering machine.This machine when receiving Morse code would strike letters corresponding to theMorse code on a undulate of paper hence eliminating the need for decoding the code.2.2. Mr. Watson, Come hitherThe first successful telephone was invented by Alexander Graham Bell.He along with Elisha Gray fought against t... ... they exercising differentaddressing protocols, only routers may be used. During these propagation MANs(Metropolitan Area Networks) ar in use and development today. These userouters that be committed preferably via a fiber optic cable, to constitute onelarge network.5.2. Pluto Calling EarthAny networks large than 1000m typically rely on telephone digital linesfor data transfer. These networks are called enlistment Switched Digital Networks .Circuit Switched Digital Networks utilize a replacement ground substance at the centraloffice of a telephone phoner that c onnects local anesthetic 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. other type of LAN to LAN connections are software program fracture 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. at a time 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 expe nsive 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 and 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 the destination packet switch, it sends it via anotherdigital connection to the receiving router.