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Disability-TheComputer HereareafewwordsbyProfessorHawkingabouthiscomputersystem. CommunicationsystemIcommunicatewithacomputersystem.IhavealwaysusedIBMcompatiblecomputers,onmywheelchair.Theyrunfrombatteriesunderthewheelchair,althoughaninternalbatterywillkeepthecomputerrunningforanhourifnecessary.ThescreenismountedonthearmofthewheelchairwhereIcanseeit,morerecentsystemshavethewholecomputerinaboxonthisarm.TheoriginalsystemswereputtogetherformebyDavidMason,ofCambridgeAdaptiveCommunications.Thiscompanymanufactureandsupplyavarietyofproductstohelppeoplewithcommunicationproblemsexpressthemselves.Recently,IntelengineersdesignedanewcomputerformepoweredbyaPentiumIIprocessor,whichInowuse. Onthecomputer,IrunaprogramcalledEqualizer?,writtenbyacompanycalledWordsPlusinc.Acursormovesacrosstheupperpartofthescreen.Icanstopitbypressingaswitchinmyhand.Thisswitchismyonlyinterfacewiththecomputer.InthiswayIcanselectwords,whichareprintedonthelowerpartofthescreen.WhenIhavebuiltupasentence,Icansendittoaspeechsynthesizer.Iuseaseparatesynthesizer,madebySpeech+.ItisthebestIhaveheard,thoughitgivesmeanaccentthathasbeendescribedvariouslyasScandinavian,AmericanorScottish.IalsocanuseWindows98throughaninterfacecalledEZKeys,againmadebyWordsPlus.Iamabletocontrolthemousewiththeswitchthroughcleverlyselectedprocessfromasmallboxshownonthedesktop.Icanalsowritetextusingsimilarmenu'stothoseinEqualizer.IcansavewhatIwritetodisk.IwritepapersusingaformattingprogramcalledTEX.Icanwriteequationsinwords,andtheprogramtranslatesthemintosymbols,andprintsthemoutonpaperintheappropriatetype.Icanalsogivelectures.Iwritethelecturebeforehand,andsaveitondisk.Icanthensendittothespeechsynthesiser,asentenceatatime.Itworksquitewell,andIcantryoutthelecture,andpolishit,beforeIgiveit.StephenHawking RecentImprovements ProfessorHawkingisdeterminedthatheisabletokeepupwiththerecentimprovementsincomputerandcommunicationtechnology.Belowaresomeoftherecentimprovements,whichhavebeencarriedoutonthesystemwithinthelast12months. LatestPentiumchip In