Introduction
Chapter 1
1.1 What is an operating system
1.2 History of operating systems
1.3 The operating system zoo
1.4 Computer hardware review
1.5 Operating system concepts
1.6 System calls
1.7 Operating system structure
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Operating System - Applied Operating System - Lecture Slides, Slides of Computer Science
These are the Lecture Slides of Applied Operating System which includes Swapping, Virtual Memory, Page Replacement Algorithms, Modeling Page Replacement Algorithms, Design Issues for Paging Systems, Implementation Issues, Segmentation etc. Key important points are: Operating System Design, Nature of Design Problem, Interface Design, Implementation, Performance, Project Management, Prends in Operating System Design, Dynamic Structures, Hiding Hardware
Typology: Slides
2012/2013
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Introduction
Chapter 1
1.1 What is an operating system 1.2 History of operating systems 1.3 The operating system zoo 1.4 Computer hardware review 1.5 Operating system concepts 1.6 System calls 1.7 Operating system structure
Introduction
- A computer system consists of
- hardware
- system programs
- application programs
History of Operating Systems (1)
Early batch system
- bring cards to 1401
- read cards to tape
- put tape on 7094 which does computing
- put tape on 1401 which prints output
History of Operating Systems (2)
- First generation 1945 - 1955
- vacuum tubes, plug boards
- Second generation 1955 - 1965
- transistors, batch systems
- Third generation 1965 – 1980
- ICs and multiprogramming
- Fourth generation 1980 – present
- personal computers
History of Operating Systems (4)
- Multiprogramming system
- three jobs in memory – 3 rd generation
The Operating System Zoo
- Mainframe operating systems
- Server operating systems
- Multiprocessor operating systems
- Personal computer operating systems
- Real-time operating systems
- Embedded operating systems
- Smart card operating systems
Computer Hardware Review (2)
(a) A three-stage pipeline (b) A superscalar CPU
Computer Hardware Review (3)
- Typical memory hierarchy
- numbers shown are rough approximations
Computer Hardware Review (5)
One base-limit pair and two base-limit pairs
Computer Hardware Review (6)
(a) Steps in starting an I/O device and getting interrupt (b) How the CPU is interrupted (a) (b)
Operating System Concepts (1)
- A process tree
- A created two child processes, B and C
- B created three child processes, D, E, and F
Operating System Concepts (2)
(a) A potential deadlock. (b) an actual deadlock.
Operating System Concepts (4)
- Before mounting,
- files on floppy are inaccessible
- After mounting floppy on b,
- files on floppy are part of file hierarchy
Operating System Concepts (5)
Two processes connected by a pipe