1.Themainfunctionsoftheoperatingsystem2.Thecategoriesoftheoperatingsystem ⊙ Words&Expressions operatingsystemenvironmentexecute resourcemanagementNetwareembeddedhost GPSsingle-usermulti-userdistributedtime-sharingreal-timesmart n.n.vt.n.n.n.adj.n.vt.abbr.n.n.adj.n.adj.adj.操作系统 环境,外界 执行,实行...
An operating system (OS) is the interface between user and computer hardware. It manages the hardware attached to the computer system. An operating system is a system software. Operating system perform various task regarding computer system like memory management,controlling peripheral devices such as ...
TypesofOperatingSystemsOperatingSystemFunctions OperatingSystemOverview Startedtopopupinsmallercomputers WidelyUsed--fromcellphonestowirelessaccesspoints(WAP)Gettingmoreandmorepowerful--theOSinatypicalmoderncellphoneisnowmorepowerfulthanadesktopcomputerfrom20yearsagoAlldesktopcomputershaveoperatingsystems.oper...
An operating system is an essential part of a computer which performs three major functions: managing resources, providing a user interface, and running application. It manages and controls the activities of the computer. Lesson 6 Operating System The primary purpose of an OS (Operating System ) ...
5 OPERATINGSYSTEMFUNCTIONS •Howanoperatingsystemhandlesprogramsdirectlyaffectsyourproductivity Singletaskingandmultitasking Foregroundandbackground Singleuserandmultiuser 6 OPERATINGSYSTEMFUNCTIONS 7 OPERATINGSYSTEMFUNCTIONS •Memorymanagementoptimizestheuseofthecomputerordevice’sinternal memory ...
3.OperatingSystemFunctions StartingacomputerProvidingaUserInterfaceManagingprogramsManagingMemoryConfiguringDevicesEstablishinganInternetConnectionProvidingFileManagementandOtherUtilities 4.OperatingSystemUtilityPrograms Functions managingfiles scanningdisks defragmentingdisks diagnosingproblems FileManager Afilemanagerisautility...
As a control program, it serves two major functions: (1) supervision of the execution of user programs to prevent errors and improper use of the computer, and (2) management of the operation and control of I/O devices.作为一个控制程序,它主要提供两个功能:(1)监督用户程序的执行,以防止错误...
Device management Storage management Application interface User interface System security management These tasks define the core of nearly all operating systems. Next, let's look at the tools the operating system uses to perform each of these functions. ...
5 OPERATINGSYSTEMFUNCTIONS •Howanoperatingsystemhandlesprogramsdirectlyaffectsyourproductivity Singletaskingandmultitasking Foregroundandbackground Singleuserandmultiuser 6 OPERATINGSYSTEMFUNCTIONS 7 OPERATINGSYSTEMFUNCTIONS •Memorymanagementoptimizestheuseofthecomputerordevice’sinternal memory ...
38、 interface and above the physical hardware Provides the file system, CPU scheduling, memory management, and other operating-system functions; a large number of functions for one level,UNIX System Structure,Microkernel System Structure,Moves as much nonessential parts from the kernel into “user”...