1. Exam Points
- Identify input data for a purpose.
- Identify the behavior of a code segment.
2. Knowledge Points
- (1) Program
- A program is a collection of program statements that performs a specific task when run by a computer.
- A program is often referred to as software (QQ, Wechat, etc).
- A code segment is a collection of program statements that is part of a program.
A program needs to work for a variety of inputs and situations.
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(2) Input
- Program inputs are data sent to a computer for processing by a program.
- Input can come in a variety of forms, such as tactile, audio, visual, or text.
- An event (mouse click, key press, etc) is associated with an action and supplies input data to a program.
- Inputs usually affect the output produced by a program.
- Input can come from a user or other programs.
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(3) Output
- Program outputs are any data sent from a program to a device.
- Program output can come in a variety of forms, such as tactile, audio, visual, or text.
- Program output is usually based on a program’s input.
