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Discussions on first chapter of isca

Madhavi (CA - FINAL) (1342 Points)

06 July 2012

Hai, Let us discuss today 1st chapter of ISCA as it ISCA is scoring subject we have revise it twice or thrice in examination point of view. Let us discuss in a sequence from 1st to 10th chapter

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56 Replies

Ram (system manager) (57 Points)
Replied 06 July 2012

Ok. Let us go ahead

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Madhavi (CA - FINAL) (1342 Points)
Replied 06 July 2012

thank u ram Give me the definition of a system and types of systems

Madhavi (CA - FINAL) (1342 Points)
Replied 06 July 2012

System is defined as i. an orderly arrangement of a set of interrelated 2. and interdependent elements 3. that operate collectively 4. to accomplish some common purpose or goal.

Madhavi (CA - FINAL) (1342 Points)
Replied 06 July 2012

Based on elements : Abstract , Physical Based on Interactive behaviour : Open , Closed Degree of Human Intervention : Manual, Automated Based on output :Deterministic, Probabilistic

Madhavi (CA - FINAL) (1342 Points)
Replied 06 July 2012

Abstract system is orderly arrangement of IDeas, it is conceptual system which is written in papers or ideas not physically implemented one. Physical system is a tangible one which operates to accomplish a task or a goal

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Madhavi (CA - FINAL) (1342 Points)
Replied 06 July 2012

Open system : which interacts freely with environment by taking input and giving output eg: Educational systems, All business enterprises if they are open system they cannot survive Closed System: Which does not interact with environment

Ram (system manager) (57 Points)
Replied 06 July 2012

abstract system is an orderely arrangement of Inter-dependent ideas, principles or concepts. pls. underline the word Inter-dependent... most important point

Ram (system manager) (57 Points)
Replied 06 July 2012

closed system do not get any feed back whereas open system gets feedbak from their external environment for their survival

Ram (system manager) (57 Points)
Replied 06 July 2012

In terms of conitinuity, closed system will vanish fast as they dont have any interaction from the environment wheras the open system , sustain for a period of time by generating suplus out of its process.

Madhavi (CA - FINAL) (1342 Points)
Replied 06 July 2012

Entropy is the quantitative measure of disorder in a system. Systems can run down on account of disorder or disorganized. The offsetting an increase in entropy requires inputs of matter and energy to repair, replenish and maintain the system. This maintenance input is termed as Negative Entropy. Open systems require more negative entropy as they interact with the environment frequently. In general, the life cycle of a closed system is much shorter compared to that of an open system because it decays faster for not having any input/ interaction from environment.

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Madhavi (CA - FINAL) (1342 Points)
Replied 06 July 2012

khushboo u tell subsystem its chraracteristics

Madhavi (CA - FINAL) (1342 Points)
Replied 06 July 2012

A subsystem is a part of larger system. Each system is composed of subsystems which is once again made up of subsystems. The interconnections and interactions between the subsystem are called interfaces

Ram (system manager) (57 Points)
Replied 06 July 2012

Interface occurs at the boundary and takes the form of input and outpout

Madhavi (CA - FINAL) (1342 Points)
Replied 06 July 2012

Decomposition is one of the character of subsystem : Because it is difficult to change or update the entire system as a whole so it will decomposed and handled