operating system. After studying this lesson they will be familiar with: 1. What is an operating system? 2. Important functions performed by an operating system. 3. Different types of operating systems. 1. 1 INTRODUCTION Operating system (OS) is a program or set of programs, which acts as an List and explain 5 functions of an operating system. What are the 5 main functions of an operating system. Production and operations are a component of all manufacturing companies and some service-based companies depending on how they are structured and managed. Production, of course, refers to the act of making goods, while an operation is WHAT IS AN OPERATING SYSTEM? • An interface between users and hardware - an environment "architecture" • Allows convenient usage; hides the tedious stuff • Allows efficient usage; parallel activity, avoids wasted cycles • Provides information protection • Gives each user a slice of the resources • Acts as a control program z define operating system; z list the functions of operating system; z classify operating system. 4.1 OPERATING SYSTEM A computer is a machine which needs to be instructed for every single step. The operating system is the most important software that runs on a computer. The OS performs the following functions. Input/Output System Management Operating system is to hide the peculiarities of specific hardware devices from the user, only the device driver knows the peculiarities of the specific device to which it is assigned. Operating system activities with respect to I/O sub-system Memory management component including buffering, caching and spooling. Operating System. An operating system (OS) is a program that acts as an interface between the system hardware and the user. Moreover, it handles all the interactions between the software and the hardware.All the working of a computer system depends on the OS at the base level. Further, it performs all the functions like handling memory, processes, the interaction between hardware and software Operating system (O.S.) is a set of inter related programs (software package) that control how the computer works, link its components, control the basic operations of the computer, manage the execution of the programs, and facilitate the communication between the user and the computer machine. Examples of O.S. : DOS system, Windows system 2. Important functions performed by an operating system. 3. Different types of operating systems. 1. 1 INTRODUCTION Operating System (OS) is system software, which acts as an interface between a user of the computer and the computer hardware. The main purpose of an Operating System is to provide an environment in which we can execute programs. 1.12.1 Core Operating System Components • User interaction with operating system -Often, through special application called a shell -Kernel • Software that contains core components of operating system • Typical operating system components include: -Processor scheduler -Memory manager -I/O manager -Interprocess communication of operating system and its functions. The student will be demonstrated practically and theoretically about different types of operating system used. Block Objective After learning this block, you will be able to understand: About Operating system and its features Detailed about different types of O/S and their structure CHAPTER 1: OPERATING SYSTEM FUNDAMENTAL