Input and output devices

Inputdevice

Inputdeviceisadevicethatinputsdataandinformationtoacomputer.Itisabridgeforcommunicationbetweenacomputerandauserorotherdevices,andisthemainexchangeofinformationbetweenauserandacomputersystem.Oneofthedevices.Thetaskoftheinputdeviceistotransferdata,instructions,andcertainflaginformationtothecomputer.Keyboards,mice,cameras,scanners,lightpens,handwritinginputboards,joysticks,voiceinputdevices,etc.areallinputdevices(InputDevice),whichisadevicethatpeopleorexternalTheprogramforprocessingthesedataisinputintothecomputer.

Thecomputercanreceiveavarietyofdata,eithernumericaldataornon-numericaldata,suchasgraphics,images,sounds,etc.,canbeinputthroughdifferenttypesTheequipmentisinputintothecomputerforstorage,processingandoutput.Computerinputdevicescanbedividedintothefollowingcategoriesaccordingtotheirfunctions:

●Characterinputequipment:keyboard;

●Opticalreadingequipment:opticalmarkreader,opticalcharacterreader;

●Graphicinputequipment:mouse,joystick,lightpen;

●Pictureinputequipment:digitalcamera,scanner,faxmachine;

●AnaloginputEquipment:Languageanalog-to-digitalconversionrecognitionsystem.

(suchasphotoelectricpapertapeinputdevice,cardinputdevice,opticalcharacterreader,tapeinputequipment,Chinesecharacterinputequipment,mouse,etc.)senddata,programsandcontrolinformationintothecomputer.

Outputdevice

Theoutputdevice(OutputDevice)representstheresultsofcalculationorprocessingorintermediateresultsinvariousformsthathumanscanrecognize,suchasnumbers,symbols,letters,etc.Therefore,inputandoutputdevicesplayaroleintheconnectionbetweenhumansandmachines.Commononesaremonitors,printers,plotters,imageoutputsystems,voiceoutputsystems,magneticrecordingequipment,etc.

Themonitorisanindispensableimageandtextoutputdeviceforcomputers.Itsfunctionistoconvertdigitalsignalsintoopticalsignalssothattextandgraphicscanbedisplayedonthescreen;printersarealsoakindofPC.Themainoutputdevice,whichprintsprograms,data,andcharactergraphicsonpaper.

Consoletypewriters,lightpens,monitors,etc.canbeusedasinputdevicesaswellasoutputdevices.

Inputandoutputdevices(I/O)playaroleinconnectingpeopleandcomputers,equipmentandcomputers,andcomputersandcomputers.

PlugandPlay

WhenitcomestoI/O,youhavetotalkaboutPlugandPlay.Withthedevelopmentofnewtechnologies,peoplearetiredofusingdriverCDstoinstalldriversfornewdevices.Theadventofnewplug-and-playtechnologyhassolvedthisproblem.

AsMicrosoftlaunchedWINDOWS95/98,italsopromotedtheintelligentmanagementcapabilitiesoftheunderlyinghardwareresourcesprovidedbyWINDOWS95/98forusers,thatis,WINDOWS95/98hasthefunctionofplugandplay(PNP:PlugandPlay)Therefore,plug-and-playiswidelyvaluedbypeople.