Introduction - Introduction to Operating Systems
Subject and UNIT: Introduction to Operating Systems: Unit I: Introduction
An operating system is a program that manages the computer hardware.
Introduction - Introduction to Operating Systems
Subject and UNIT: Introduction to Operating Systems: Unit I: Introduction
Before designing the system, first define goals and specification of the system. Goals and specification will give the idea about the system and it also understands the requirement of the user.
Introduction - Introduction to Operating Systems
Subject and UNIT: Introduction to Operating Systems: Unit I: Introduction
Modern operating system consists of a collection of system programs. System program that provides an application programming environment on top of the hardware.
Introduction - Introduction to Operating Systems
Subject and UNIT: Introduction to Operating Systems: Unit I: Introduction
System calls provide the interface between a running program and the operating system. Any single CPU computer can execute only one instruction at a time.
Introduction - Introduction to Operating Systems
Subject and UNIT: Introduction to Operating Systems: Unit I: Introduction
Various methods are used to interface with the operating system. They are command-line interface, Graphical User Interface and Touch-Screen Interface.
Introduction - Introduction to Operating Systems
Subject and UNIT: Introduction to Operating Systems: Unit I: Introduction
Operating system provides different types of services to different users. It provides services to program like load of data into memory, allocating disk for storage, files or directory for open or read etc.
Introduction - Introduction to Operating Systems
Subject and UNIT: Introduction to Operating Systems: Unit I: Introduction
Modern operating system is complex in nature. Here we study different structure motto of the operating systems.
Introduction - Introduction to Operating Systems
Subject and UNIT: Introduction to Operating Systems: Unit I: Introduction
Time constraints is the key parameter is real time systems. It controls autonomous system such as robots, satellites, air traffic control and hydroelectric dams.
Introduction - Introduction to Operating Systems
Subject and UNIT: Introduction to Operating Systems: Unit I: Introduction
Network operating system is designed by using existing operating system.
Introduction - Introduction to Operating Systems
Subject and UNIT: Introduction to Operating Systems: Unit I: Introduction
A distributed system is a collection of autonomous hosts that are connected through a computer network.
Introduction - Introduction to Operating Systems
Subject and UNIT: Introduction to Operating Systems: Unit I: Introduction
Clustered system is a group of computer system connected with a high speed communication link. Each computer system has its own memory and peripheral devices. Clustering provides high availability.
Introduction - Introduction to Operating Systems
Subject and UNIT: Introduction to Operating Systems: Unit I: Introduction
Multiprocessor system means more than one processor in close communication. All the processor share common bus, clock, memory and peripheral devices.