Thetermcomputerdescribesadevicemadeupofacombinationofelectroniccomponents．Byitself,acomputerhasno()andisreferredtoashardware,whichmeanssimplythephysicalequipment．Thehardwarecan'tbeuseduntilitisconnectedtootherelements,allofwhichconstitutethesixpartsofacomputer-basedinformationsystem,hardware,software,data/information,people,proceduresandcommunications． Asystemisdefinedasacollectionofrelatedcomponentsthat()toperformataskinordertoaccomplishagoal．Anyorganizationthatusesinformationtechnologywillhaveacomputer-basedinformationsystemtoprovidemanagers(andvariouscategoriesofemployeeswiththeappropriatekindofinformationtohelpthemmakedecisions． Systemsanalysisanddesignistoascertainhowasystemworksandthentakestepstomakeit()Often,asystemapproachisusedtodefine,describe,andsolveaproblemortomeeta(an)(4) Fromtimetotime,organizationsneedto()theirinformationsystems,in,responsetonewmarketing'opportunities,modifiedgovernmentregulations,theintroduction．ofnewtechnology,mergerwithanothercompany,orotherdevelopments．Whenchangeisneeded,thetimeisripeforapplyingtheprinciplesofsystemsanalysisanddesign． (4)应选()。
A.decision
B.need
C.standard
D.objective
正确答案是D