System Analysis and Design
Top-down programming is

a group of related fields
a series or group of components that perform one or more operations of a more complex system
a map of the programmer's view of the data
an approach in which the top module is first tested then program modules are added from the highest level to the lowest level

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System Analysis and Design
System prototyping helps the designer in

making the programmers understand how the system will function.
all of the listed here
communicating to the user, quickly, how the system, when developed, will look like and get a feedback.
giving a demo of the software, to the system manager to whom he reports

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System Analysis and Design
The Turnaround is

None of these
a group of related fields
a program statement that violates one or more rules of the language in which it is written
the elapsed time between the receipt of the input and the availability of the output
the key information of programming

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