Operating systems11 9-07 (1)

Prof. B. I. Khodanpur HOD – Dept. of CSE R. V. College of Engineering. EmailID: [email_address] Subject: Operating Systems (For EDUSAT) Common Paper for BA / B.Com / B.Sc Code: CS-54

Application Software (contd…): ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Application Software (contd…): ,[object Object],[object Object],[object Object],[object Object],[object Object]

Application Software (contd…): ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Contents ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

What is OS? ,[object Object],[object Object],[object Object],[object Object],[object Object]

What OS does? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Structure of Operating System: Application Programs System Programs Software (Operating System) HARDWARE (Contd…)

Structure of Operating System (Contd…): ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Structure of Operating System (Contd…): ,[object Object],[object Object],[object Object],[object Object]

Evolution of OS: ,[object Object],[object Object],[object Object],[object Object]

Evolution of OS (contd..): (Contd…) Atlas supervisor (1961), Exec II system (1966) Processor multiplexing, Indivisible operations, Demand paging, Input/output spooling, Priority scheduling, Remote job entry Multi- programming BKS system (1961) Tape batching, First-in, first-out scheduling. Batch Processing IBM 701 open shop (1954) The idea of OS Open Shop Operating Systems Technical Innovations Major Phases

Evolution of OS (contd..): WFS file server (1979) Unix United RPC (1982) 24 Amoeba system (1990) Remote servers Distributed Systems OS 6 (1972) Pilot system (1980) Graphic user interfaces Personal Computing RC 4000 system (1969), 13 Venus system (1972), 14 Boss 2 system (1975). Hierarchical systems, Extensible kernels, Parallel programming concepts, Secure parallel languages Concurrent Programming Multics file system (1965), Unix (1974) Simultaneous user interaction, On-line file systems Timesharing

Batch Processing: ,[object Object],[object Object],[object Object],[object Object],[object Object]

Batch Processing (Contd…): ,[object Object],[object Object],OS User program area

Multiprogramming: ,[object Object],[object Object],[object Object],[object Object],[object Object]

Multiprogramming (Contd…): ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Job 5 Job 4 Job 3 Job 2 Job 1 OS

Time Sharing Systems: ,[object Object],[object Object],[object Object],[object Object],[object Object]

Operating Systems functions: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Types of OS: ,[object Object],[object Object],[object Object]

Single User Systems: ,[object Object],[object Object],[object Object]

Multi-User Systems: ,[object Object],[object Object],[object Object],[object Object],[object Object]

Operating systems11 9-07 (1)

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