Salah Khogali Ismail has written: 'BASIC MANAGERIAL CONCEPTS' 'BASIC MANAGERIAL CONCEPTS'
1)what is importance of security in operating system? 2)explain about management devices in OS? Devices in OS? 3)Discuss about security concepts in OS? 4)Differnt types of memories available in OS?
design evaluation.
care needed to be managed
what is social design constraint
control coupling content coupling common coupling data coupling external coupling message coupling
Low coupling
There are many like flexible coupling, jaw coupling, sleeve coupling, tire coupling, pin and bush coupling, rigid coupling, etc
1)rc coupling 2)transformer coupling 3)direct coupling
There should be low dependence and high interaction between the modules. The dependence should be low so that the module can work in absence of another module. So, there should be low coupling ad high cohesion in software design.
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They are of similar design, but a fluid coupling simply transmits torque (with some frictional loss), while a torque converter amplifies torque, similar to a reduction gear.
software engg
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A coupling circuit connects the output of one stage of a system to the input of another stage. There are many different types of coupling circuits (e.g. direct coupled, resistor coupled, capacitor coupled, transformer coupled) each with its own advantages and disadvantages.
transformer coupling
Given two lines of code, A and B, they are coupled when B must change behavior only because A changed. They are cohesive when a change to A allows B to change so that both add new value.