AP CSP Unit 3

Unit 3 - Intro to App Design

Unit Vocabulary

• User Interface: the inputs and outputs that allow a user to interact with a piece of software. User interfaces can include a variety of forms such as buttons, menus, images, text, and graphics.
• Input: data that are sent to a computer for processing by a program. Can come in a variety of forms, such as tactile interaction, audio, visuals, or text.
• Output: any data that are sent from a program to a device. Can come in a variety of forms, such as tactile interaction, audio, visuals, or text.
• Program Statement: a command or instruction. Sometimes also referred to as a code statement.
• Program: a collection of program statements. Programs run (or “execute”) one command at a time.
• Sequential Programming: program statements run in order, from top to bottom.
• Event Driven Programming: some program statements run when triggered by an event, like a mouse click or a key press
• Documentation: a written description of how a command or piece of code works or was developed.
• Comment: form of program documentation written into the program to be read by people and which do not affect how a program runs.
• Pair Programming: a collaborative programming style in which two programmers switch between the roles of writing code and tracking or planning high level progress
• Debugging: Finding and fixing problems in an algorithm or program.
• Development process: the steps or phases used to create a piece of software. Typical phases include investigating, designing, prototyping, and testing
• Event: associated with an action and supplies input data to a program. Can be generated when a key is pressed, a mouse is clicked, a program is started, or by any other defined action that affects the flow of execution.