Operating Systems Tasks 15122021 1 Learning Objectives Discuss

Operating Systems Tasks 15/12/2021 1

Learning Objectives Discuss the purpose of operating systems. 15/12/2021 2

All Operating Systems: Control the hardware of the computer system: n n n Memory management to control the way that primary memory is used Resource allocation / processor / printer time Access to peripheral devices via drivers. User interface / HCI: n To provide human access and allows communication. Provide environment for application software to be executed and managed: n i. e. installation to system, access to memory and allows software translation via compiler / interpreter / assembler. Provide utilities / library routines to carry out “housework” and common tasks e. g. n n File handling Defragmenting Formatting Virus protection Security n backup procedures Privacy n logons / passwords 15/12/2021 3

Plenary Describe the features which an operating system would be expected to provide in a single user computer system. 15/12/2021 4

All Operating Systems Provide: User interface n To allow communication/type of interface File handling: n To allow use of secondary storage Disk management n defragmenting / formatting / storage Virus protection n To protect files on secondary storage Security n backup procedures 15/12/2021 5

All Operating Systems Provide: Privacy n logons / passwords Access to peripheral devices n via drivers / allowing hard copy Memory management n To control the way that primary memory is used Manages application software / installation to system / access to memory Resource allocation /processor / printer time 15/12/2021 6