System Analysis and Design
Conversion method in which users, being used to an old system, continue to use the old system, alongside the new system, is

All of these
None of these
multi processing
multitasking
parallel run

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System Analysis and Design
The approach used in top-down analysis and design is

to identify the top level functions by combining many smaller components into a single entity
to identify a top level function an d then create a hierarchy of lower-level modules and components.
all of the listed here
to prepare flow charts after programming has been completed

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