APP C Lessons 1.3
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Incremental approach Program | An approach to programming where the programmer adds and tests code in small chunks at a time to make sure it behaves the way they want it to, before adding more code.
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| Program | A set of instructions that a computer executes to achieve a particular objective.
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| End users | A representative consumer for whom a hardware or software product is designed.
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| User interface (UI) | The visual part of a computer app or operating system, through which an end user interacts with the computing device or software.
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| View layer | The layer of an app that the user sees and interacts with.
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| Controller layer | The layer of an app that contains the program that tells the app how to behave.
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| Event | An action or occurrence that happens during runtime that will trigger a response or behavior by the software. Examples of events include user-initiated events, such as clicking a button, or external events, such as the device receiving an SMS text message
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| Runtime | The period when a program is running. Runtime begins when a program is opened (or executed) and ends when the program is closed.
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| Event-driven programming | event-driven programming
Type of computer programming where the program responds to an input (or trigger).
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| Event handlers | A block of code that is triggered when a certain event happens.
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| User-initiated event | In a program, an event that is triggered by user interaction with the user interface.
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| Abstraction | The process of reducing complexity by hiding unnecessary details to make it easier to think about a problem.
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| Conditional statement | A command that performs different actions depending on whether a condition is true or false.
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| Boolean logic | A form of mathematics in which an expression is reduced to either True or False.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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