A real time system is defined as follows - A real-time system is one in which the correctness of the computations not only depends upon the logical correctness of the computation but also upon the time at which the result is produced. If the timing constraints of the system are not met, system failure is said to be occurred.


Two types Hard real time operating system Strict time constraints Secondary storage limited or absent Conflicts with the time sharing systems Not supported by general purpose OS Soft real time operating system Reduc ....etc

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Presented By
Sukanta Sen
Animesh Saha
Siddhartha Sarkar
Santiram Karmakar

Introduction :-
What is file
A file is the smallest allotment of logical secondary storage.
What is a file system
Files are managed by the operating system. The part of the operating system dealing with files & how they are structured, named, accessed, used, protected is known as File System.




Different types of File System
Windows File Systems
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For ten years researchers have been attempting to construct programming language systems that support orthogonal persistence above conventional operating systems. This approach has proven to be poor; researchers invariably construct a complete abstract machine above the operating system with resulting loss of efficiency. This paper describes a new approach, the construction of an operating system designed to support orthogonal persistence. The operating system, Grasshopper, relies upon three powerful and orthogonal abstractions: containers, loc ....etc

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i need ppt on embedded system digital bike operation .iif u have please sent me for [email protected]

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Inferno is answering the current and growing need in the marketplace for distributed computing solutions. Based on more than 20 years of Bell Labs research into operating systems and programming languages, Inferno is poised to propel network computing into the 21st century. Bell Labs will continue to support the evolution of Inferno under a joint development agreement with Vita Nuova. Inferno is an operating system for creating and supporting distributed services. It was originally developed by the Computing Science Research Center of Bell Labs ....etc

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For ten years researchers have been attempting to construct programming language systems that support orthogonal persistence above conventional operating systems. This approach has proven to be poor; researchers invariably construct a complete abstract machine above the operating system with resulting loss of efficiency. This paper describes a new approach, the construction of an operating system designed to support orthogonal persistence.

The operating system, Grasshopper, relies upon three powerful and orthogonal abstractions: containers, ....etc

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presented by:
Saurabh Kumar Sinha


Mobile Operating System
What is Android?
 Android is a software stack for mobile devices that includes an OS, middleware and key applications.
 User applications can be developed using Android SDK which supplies a host of API’s needed for development using Java programming language.
A slice of history
 Google acquired Android Inc.USA in 2005 with establishing OHA.
 Announced Android in 2007 and released source code.
 reached version 2.1 releasing Google ....etc

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By the mid 1980 s, the trend in computing was away from large centralized time-shared computers towards networks of smaller, personal machines, typically UNIX workstations . People had grown weary of overloaded, bureaucratic timesharing machines and were eager to move to small, self-maintained systems, even if that meant a net loss in computing power. As microcomputers became faster, even that loss was recovered, and this style of computing remains popular today.
Plan 9 began in the late 1980 s as an attempt to have it both ways: to build a s ....etc

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DIGITAL BIKE OPERATING SYSTEM SANS KEY

ABSTRACT :

Now a days consumer products like washing machine, microwave oven, and

cellphone to industries digital technology plays a major role. But we

have not yet used this technology in bikes. What my idea of making u se

of this tech. in bikes is a complete digital bike operating system sans

key. According to my invention key is not required to operate a bike

(The operation includes starting & locking the bike, fuel tank cap

opening) & also the petrol k ....etc

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