Module7Unit1 Livingwithtechnology ReadingTheevolutionofvideoandsounddevices影像与声音设备的发展 Readingstrategy understandingheadings Headingscanshowyouhowatextisorganized Theycangiveanideaastothecontentsofeachsection Thestructureofthetext Theevolutionofvideoandsounddevices TV Soundandvideorecorders EarlyhistoryofTV Themodernage satelliteTV Earlyhistoryofsoundrecorders Soundandvideorecorders Soundandvideogodigital Thefuture EarlyhistoryofTV ThedevelopmentofTVbroadcast Peoplewhocontributedtothedevelopment ThedevelopmentofcolorTV EarlyhistoryofTV Howmanyaspectsarementionedinthispart ThefirstpublicTVbroadcastsweremade Thefirstlong distanceTVbroadcastwasmadebetweentwocountries Regularpublicbroadcastingbegan in1925 in1928 in1928 in1929 in1928 Readthefirstparagraph thenfillintheform ThedevelopmentofTVbroadcast Peoplewhocontributedtothedevelopment JohnLogieBaird Hissystemwas andhad He in1928 PhiloFarnsworth He inthedevelopmentofTVinthelate1920sandearly1930s usedbyModernTVswerefirstdiscoveredbyFarnsworth primitive manydrawbacks constructedthefirstcolourTV madeimportantbreakthroughs Manyoftheprinciples ThedevelopmentofcolorTV WhenwasthefirstcolorTVconstructed Whendidregularcolorbroadcastsbegin ThefirstcolorTVwasconstructedin1928 RegularcolorbroadcastsbeganintheUSAin1951andin1967intheUK Themodernage satelliteTV ThefeaturesofsatelliteTV bebroadcastlivevastdistances witheveryonereceivingthesamebroadcastatthesametime beaccessibletopeoplewholivefarawayfromcities benefitmostpeople Earlyhistoryofsoundrecorders Ithadtobewoundupbyhand Hemadethefirstrecordingofahumanvoicein1877 ThomasEdison Thefirstrecordplayer EmileBerliner Soundandvideorecorders Soundandvideogodigital Thedevelopmentofsoundandvideorecorders 192819501960s1970s198219931995 steeltape papertapeplastictapeportablecassetteplayers videorecorderssmallandcheapvideorecordersCDSVCDsDVDs Thefuture Thiswillsoonmakerecords cassetterecorders CDs DVDsandevenTVsthingsofthepast Translatethesentence Whatdoes this referto ChoosethedevelopmentofTVorsoundandvideorecorders Trytotellyourpartneraboutitsdevelopment Rememberthatyoushouldorganizeyourreportinorderoftime Activity Whataresomepossibleadvantagesanddisadvantagesofhavingsoundandvideodevicesinourlives Discussion Homework FinishA1 A2onP98