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1、Unit1AboutComputers1.Howdopeopleusecomputers?重点记忆Scientistsusecomputerstosolveresearchproblems.Enigineersusecomputerstomakecars.Thepolicesusecomputerstotrackdowncriminals.2.Whatishandwareandgiveexamples.重点记忆Physicalcompoentsofcomputer.Examples:keyboard,mouse,joystic,lightpen,sc
2、anner.3.Whatissoftwareandthetypes.重点记忆Theproblemsthatrunthecomputer.Twotypes:(1)Systemsoftware:Unix,Windows,Macos.(2)Applicationsoftware:QQ,photoshop,MSoffice.4.Machinelangumge:0,1.5.ThefatherofcomputerisCharlesBabbage.重点记忆Unit2TwoOperatingSystem重点记忆kWhatisOS?(1)Itisaprogramtha
3、tcontrolthecomputer.(2)Systemsoftware.(3)Itactsasinterfacebetweenusersandcomputers.(4)Itcontrolsandmanagescompterresources.user1user2usernApplicationsoftwareHandware2.FunctionofOS(1)Processmanagement(1)Devicemanagement(2)Filemanagement(3)Memorymanagement3、GoalsofOS(1)Convenient
4、:Windows(2)Efficient:Unix4、GenerationsofOS(1)SequentialOperatingSystem(2)BatchprocessingOperatingSystem(3)MultiprogramingOperatingSystem(4)Real-timeOperatingSystem5、CategroriesofOS(1)Sngle-UserOperatingSystem:D0SQS2⑵Multi-UserOperatingSystem:IBM,09390(3)NetworkOperatingS/stem(4
5、)Multi-TaskingOperatingSystem:Windows,Unix(5)DesktopOperatingSystem:PC,Tablet,PDA(6)MobileOperatingSystem:Android,ios,Windows6、ThedifferencebetweenRAMandROMRAMROM(1)RandomAccessMemoryReadOnlyMemory⑵ReadandwriteonlyreadTemporarymemoryPermenentmemory7.ThediffereneebetweenMainMemo
6、ryandSecondaryMemoryMainMemorySecondaryMemory(1)RAMandAOMFDD,HDD,CD,CDD⑵IternalExternal⑶SmallLarge7.ThedifferencebetweenDOSandWindowsDOSWindows(1)Sngle-UserOperatingSystemMulti-TaskingOperatingSystem(2)DiffculttouseEasytouse(3)CUIGUI8.Thediffereneebetweensingle・taskingandmulti-
7、taskingsingle-taskingmulti-tasking(1)DoonethingatthesametimeDomanythingsatthesametime9.ThestrengthofWindowsOperatingSystem(1)GUI(2)Devicesupport(3)Havemanyofficeapplication(4)Easytouse(5)Availablesoftware(6)Havemanygames10.TheweaknessofWindowsOperatingSystem(1)Expensive⑵Diffcul
8、ttoinstall(2)Vulnerabletovirusattracts(3)Poorsecurity(
