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q what is input-output processorslets briefly summarize the development in area of inputoutput functions these can be briefed as below1 cpu directly
q explain working of direct memory accessin both programmed io and interrupt-driven processor is busy with executing inputoutput instructions and io
q what is bus arbitrationin this technique io interface first needs to control bus and only after that it can request for an interrupt in this
q what do you mean by daisy chainthis scheme provides a hardware poll with this scheme an interrupt acknowledge line is chain by different interrupt
q what do you mean by software pollin this scheme on occurrence of an interrupt processor jumps to an interrupt service program or routine whose job
q what is multiple interrupt linesmultiple interrupt lines simplest solution to problems above is to provide multiple interrupt lines that will
q design issues related to interrupt-driven input - outputso interrupt handling includes interruption of currently executing program execution of
q interrupt - driven input-outputproblem with programmed io is that processor has to wait a long time for io interface to see whether a device is
q what is input - output instructionsan io instruction is stored in memory of computer and is fetched as well as executed by processor producing an
q determine why a new system is requiredfeasibility study - feasibility study is the method of defining the current problem determining why a new
software development life cycle sdlc- sdlc system development life cycle is a well-defined process by which a system is conceived developed and
this step of systems examination is one of the most difficult in this stage systems specifications are identified by asking what who when where and
hello sirmam actually i am trying to implement the concept of mac layer protocols in ns2 but unfortunately i am not able to do that and not
q factors of information system which affect the businessthere are several factors which affect the business such as -a threats of fresh entrantsb
q describe short note on information system for strategic advantageans strategic role of information systems engage using information technology to
q explain functional roles of information systemfunctional roles of information system1 lower costs -a use it to significantly reduce the cost of
q what do you mean by information systeman information system is an planned combination of hardware people communication networks software and data
q requirements of decision support systema fast computation a decision maker is able to perform a large number of computations very quickly and that
q characteristics of decision support systemcharacteristics of dss- the qualities of the dss are as follows -1 dss focus on towards providing
q definition of decision support systemdefinition of dss a decision support system is a specific kind of information system which is an interactive
q define decision support system ans the decision support system is an information system application which help decision making dss tends to be used
q what is input - output commandsthere are four kinds of io commands which an io interface can receive when its addressed by a processor control this
q programmed input - output technique for computersprogrammed inputoutput is a useful io technique for computers where hardware costs need to be
q device drivers in windows systemin windows system device drivers are implemented as dynamic link libraries dlls this scheme has advantages which
in ms-dos device drivers are installed and loaded dynamically it implies that they are loaded into memory when computer is started or re-booted and