BCA, Sem-3, SYSTEM SOFTWARE AND OPERATING SYSTEM,Unit-5, Operating system components 2, 10-05-2021

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BCA 2 All right are reserved with CU-IDOL SYSTEM SOFTWARE AND OPERATING SYSTEM Course Code: BCA134 Semester: Third e-Lesson: 5 SLM Unit: 5 www.cuidol.in Unit-1(BCA134)

SYSTEM SOFTWARE AND OPERATING SYSTEM 33 OBJECTIVES INTRODUCTION Describe the utility of different system An operating system is a programs & system tools. program that controls the execution of application To understand evolution, types and programs and acts as an functions of OS. interface between the user of a computer and the computer Participants will be able to learn about hardware. Scheduling policies, process concurrency, I/O management, and File systems. INSTITUTE OF DISTANACEll ArNigDhtOaNrLeINreEsLeErAvRedNIwNiGth CU-IDOL . Unit-1(BCA134) www.cuidol.in

TOPICS TO BE COVERED 4  CPU Scheduling www.cuidol.in Unit-1(BCA134) All right are reserved with CU-IDOL

Operating system 5 • Operating System is software that works as an interface between a user and the computer hardware. • The primary objective of an operating system is to make computer system convenient to use and to utilize computer hardware in an efficient manner. • “An operating system is a program that acts as an interface between the user and the computer hardware and controls the execution of all kinds of programs.” • Some popular Operating Systems include Linux, Windows, OS X, VMS, OS/400, AIX, z/OS, etc. www.cuidol.in Unit-1(BCA134) All right are reserved with CU-IDOL

File Management component 6 www.cuidol.in Unit-1(BCA134) All right are reserved with CU-IDOL

Protection System 7 • Protection and security requires that computer resources such as CPU, softwares, memory etc. are protected. This extends to the operating system as well as the data in the system. This can be done by ensuring integrity, confidentiality and availability in the operating system. www.cuidol.in Unit-1(BCA134) All right are reserved with CU-IDOL

Networking management component 8 www.cuidol.in Unit-1(BCA134) All right are reserved with CU-IDOL

Command interpreter 9 • A command interpreter is a system software that understands and executes commands that are entered interactively by a human or from an another program. Command interpreter is an important part of any operating system. A command interpreter is often also called a command shell or simply a shell. www.cuidol.in Unit-1(BCA134) All right are reserved with CU-IDOL

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