System Analysis and Design
Cost-Benefit analysis

estimates the hardware and software costs
None of these
compares the cost, with the benefits, of introducing a computer-based system
evaluates the tangible and non-tangible factors
All of these

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System Analysis and Design
The black-box concept:

None of these
assumes that inputs and outputs will remain stable
is invoked by describing a system in terms of inputs and outputs, leaving the transformation process a black box.
All of these
assumes that the black box is independent

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