Sunday, February 17, 2013

Elements of system


Elements of system:


A system’s objectives are expressed in terms of output is needs to produce, the inputs are the data which are processed while the output i.e. information are the outcome of the process.
In addition there are two more components
                             i.            Control
It makes the system to operate within tolerable performance levels. Control of the system is the decision maker that controls the activities of accepting input, process & producing the output.

                          ii.            Feedback
It is the information on how well a system is performing & it is essential for system modifications.
System may use feedback for control the information generated by comparing results with acceptable level of performance (standards) and informing the control elements of the difference is termed as feedback.
In feedback control the output is fed back to input. It allows to be majored against some standards and making adjustment in the processing accordingly.


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