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Note for Operating Systems - OS By Lovely Kiitian

  • Operating Systems - OS
  • Note
  • KIIT University - KIIT
  • Computer Science Engineering
  • 12 Topics
  • 1481 Views
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  • Uploaded 10 months ago
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Chapter 1: Introduction Mr. SUBHASIS DASH SCHOLE OF COMPUTER ENGINEERING. KIIT UNIVERSITY, BHUBANESWAR subhasisbbsr@gmail.com

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History  High Utilization  Professional computer operator  Reducing set up time  Mode of interaction  Automatic job sequencing

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What is an Operating System?  A collection of system programs entrusted with effective utilization of a computer.  A program that acts as an intermediary between a user of a computer and the computer hardware.  Operating system goals:  Execute user programs and make solving user problems easier.  Make the computer system convenient to use.  Use the computer hardware in an efficient manner.

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Computer System Structure  Computer system can be divided into four components  Hardware – provides basic computing resources   Operating system   Controls and coordinates use of hardware among various applications and users Application programs – define the ways in which the system resources are used to solve the computing problems of the users   CPU, memory, I/O devices Word processors, compilers, web browsers, database systems, video games Users  People, machines, other computers

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