Activity 1.3; The Germ Guide App

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event handlers

A block of code that is triggered when a certain event happens.

end user

A representative consumer for whom a hardware or software product is designed.

program

A set of instructions that a computer executes to achieve a particular objective.

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.

incremental approach

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.

runtime

The period when a program is running. Runtime begins when a program is opened (or executed) and ends when the program is closed.

abstraction

The process of reducing complexity by hiding unnecessary details to make it easier to think about a problem.

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.

user-initiated event

In a program, an event that is triggered by user interaction with the user interface.

controller layer

The layer of an app that contains the program that tells the app how to behave.

view layer

The layer of an app that the user sees and interacts with.

event-driven programming

Type of computer programming where the program responds to an input (or trigger).


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