Program Function and Purpose (College Board AP® Computer Science Principles): Flashcards
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Name two purposes a computing innovation can serve.
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Cards in this collection (23)
Name two purposes a computing innovation can serve.
A computing innovation can serve the purpose of solving a problem or pursuing an interest through creative expression.
Which purpose does a navigation app that calculates the fastest route to a destination serve?
A navigation app that calculates the fastest route serves the purpose of solving a problem, because it addresses a practical need.
Which purpose does a music production program that lets users compose and edit tracks serve?
A music production program serves the purpose of creative expression, because it lets users create something new.
True or False?
A single computing innovation can only serve one purpose.
False.
A single computing innovation can serve more than one purpose at the same time.
Why is understanding the purpose of a computing innovation important?
Understanding the purpose is essential for evaluating its design and impact.
Where does the development of a program begin?
The development of a program begins with identifying the problem it is intended to solve or the experience it is intended to provide.
Name two decisions that understanding a program's purpose helps developers make.
Understanding a program's purpose helps developers decide:
What features the program needs
How the user will interact with it
What data the program will process
What can happen if a program is developed without a clear purpose?
Without a clear purpose, a program may include unnecessary features or fail to meet the needs of its intended audience.
Programs are developed to address the needs of users or to _______ new ideas.
Programs are developed to address the needs of users or to explore new ideas.
Besides what a program does, what else does understanding its behavior involve?
Understanding a program's behavior also involves recognizing what the program cannot do.
What does the behavior of a program describe?
The behavior of a program describes what it does when it runs, including the outputs it produces in response to different inputs.
Define program.
A program is a collection of statements that work together to accomplish a specific task.
Define statement.
A statement is a single instruction that directs the computer to perform a specific action.
In what order do program statements execute by default?
By default, program statements execute sequentially, from top to bottom, with each statement completing before the next one begins.
Define code segment.
A code segment is a collection of program statements that is part of a program.
Define the behavior of a program.
The behavior of a program is how it functions during execution, often described by how a user interacts with it.
Name two things that interrupt the default sequential flow of a program.
The default sequential flow is interrupted by events and by procedure calls.
True or False?
Changing the order in which statements execute has no effect on a program's output.
False.
The order in which statements execute directly affects what the program does and the output it produces.
At what two levels of detail can a program's behavior be described?
A program's behavior can be described broadly, by what it does, or in more detail, by both what it does and how its statements accomplish that function.
An _____ is associated with an action and supplies input data to the program.
An event is associated with an action and supplies input data to the program.
Define edge case.
An edge case is an input at or just beyond the extremes (minimum and maximum) of the input range.
Name three kinds of input a program must be designed to handle.
A program must be designed to handle expected values, edge cases, and invalid or unexpected data.
True or False?
Different inputs to the same program can produce different outputs.
True.
The functionality of a program is directly affected by the input it receives.
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