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Module7Unit1Livingwithtechnology•Electricalappliances:•Machinesareelectrical,whichareusedfordoingjobsinthehome,suchaswashingclothesorcooking.•Mosthomesnowhavenumerouselectricalappliances,fromdishwasherstomicrowaveovens.•Electronicdevices:•Smallpiecesofequipment,especiallyadvancedelectronicequipment.•Somecarsarefittedwithasafetydevicewhichwon’tletthecarstartunlesspassengersarewearingseatbelts.Hightechnologyhasadirecteffectonourlife.Whatelectricalandelectronicappliancesdoyouhaveathome?TVsetremotecontrolrefrigeratorwashingmachinemicrowaveovenair-conditionerflatirondustcatcher/vacuumcleanerelectricricecookerelectromagneticovenkitchenventilator(油烟机)cookingutensils（炊具）desktoplaptopdigitalcameraDVDMP3microphoneelectroniccalculatorhairdryercellphonetelephonetaperecorderelectricfan•Microwaveovens•Refrigerators•TVsets•Airconditioners•Washingmachines•Vacuumcleaners•Dishwasher•Computers•CDplayers•Mobilephones•Digitalcamera•Electronicdictionaries•…Whichdoyouthinkisthemostuseful?Why?Isthereanythingthatyoudon’tthinkisuseful?Why?Thedevelopmentofelectricdevices:DevelopmentofTVblack-and-whiteTVcolourTVLCDscreenDiscussion:1.WhatkindofTVdoyouhaveathome?2.WhatdifferencescanyoufindbetweentheTVinyourhomeandtheTVinthispicture?3.WhatkindofpicturesdidearlyTVshave?4.WhatotherfunctionsdoyouneedinamodernTV?WhatdifferencescanyoufindbetweentheTVinyourhomeandtheTVinthispicture?EarlyTVhadantennaeontop.Thescreenwasverysmallandcouldshowonlyblack-and-whitepictures.ThesizeoftheTVwassmallcomparedwithmodernTV,andusuallyitlookedlikeawoodenbox.EarlyTValsodidnothavearemotecontrol.Thecontrolpanelwasononesideofthescreen.WhatkindofpicturesdidearlyTVhave?EarlyTVhadblack-and-whitepicturesthatwerefuzzy.WhatotherfunctionsdoyouneedinamodernTV?desktoplaptopPalmDevelopmentofcomputerDevelopmentofdictionarydictionaryelectronicdictionaryDiscussion:1.Howdoyoulookupawordinapaperdictionary?2.Howmanyofyouhaveanelectronicdictionary?Howdoyoulookupawordinsuchadictionary?3.Besidesthedictionary,whatelsecanbestoredinyourelectronicdictionary?4.Whichdoyouprefer,anelectronicdictionaryoratraditionalpaperdictionary?Why?Howdoyoulookupawordinapaperdictionary?Thewordsinapaperdictionaryarearrangedinalphabeticalorderfrom‘A’to‘Z’.Weneedtolookatthefirstletterofthewordanduseittosearchinthedictionary.Iftwowordsstartwiththesameletter,welookatthesecondlettertodecidethealphabeticalorder.Ifthefirstandthesecondlettersarethesame,welookatthethirdletterandsoon.Howdoyoulookupawordinsuchadictionary?Wekeyinthewordwewanttolookupandclickthebutton‘Enter’.Thenthewordentrywillappearonthescreen.Therecanbeacalendar,alistofaddressesandphonenumbers,memosoraclock.Morerecentelectronicdictionarieshavelargememoryspaceandsomecanbeusedaselectronicbookswithhundredsofbooksstoredinside.Whichdoyouprefer,anelectronicbookoratraditionalpaperbook?Why?Besidesthedictionary,whatelsecanbestoredinyourelectronicdictionary?Developmentofcommunicationletter/telegramtelephonebeepercellphoneTheFirstCellphone(1973)Name:MotorolaDyna-TacSize:9x5x1.75inchesWeight:2.5poundsDisplay:NoneNumberofCircuitBoards:30Talktime:35minutesRechargeTime:10hoursFeatures:Talk,listen,dialDiscussion:1.Howdidpeoplekeepintouchinthepast?2.Whataresomerecentdevelopmentsinmobilephonetechnology?3.Manyhighschoolstudentsbringmobilephonestotheirschools.Doyouthinkhighschoolstudentsshouldusem...