Thepersonalcomputerwasarevolutionininformationtechnologythatspawneda$50billionhardwarebusinesswithanother$30billioninsoftwareandperipherals(e.g.mousekeyboardprinteretc.)by199.Duringitsshort15yearstheindustryevolvedthroughthreesuccessiveperiods.Duringitsfirst5to6yearsitwascharacterizedbyexplosivegrowthandmultiplesmallcompetitorsvyingforapieceofthemarket.From1981to1985theindustrybecameabattleforstandardsandretailshelfspace.Thethirderaswasoneofincreasingfragmentation.From1986through1991-1992newmanufacturersfromaroundtheworldgrantedfromtheindustryleadersasnewchannelsofdistributionemergedandproductinnovationaswellasrevenuegrowthslowed DuringtheearlyyearsoftheindustryventurecapitalintheU.S.encouragedtheentryofnewfirmsthatofferedproductsineveryconceivableshapeandsize.By1980newentrantsfloodedthemarketpromptingdistinctstandardsanduniquetechnicalfeatures.Almosteveryfirmhadadifferentconfigurationofhardwareandsoftware.ThefirstPChadrelativelylittlespeedormemory.Howevereventheseearlcomputersallowedmanagerstoperformtasksthatwereverytimeconsuming. WhendidthePCindustrystart?
A.Around 1981 B.Around 1966 C.Around 1976 D.Around 1992正确答案C
