经典的恐龙书的答案operatingsystemconceptIntroductionPracticeExercises1.1Thethreemainpuropsesare:•Toprovideanenvironmentforacomputerusertoexecuteprogramsoncomputerhardwareinaconvenientandefficientmanner.•Toallocatetheseparateresourcesofthecomputerasneededtosolvetheproblemgiven.Theallocationpr