App design

User Interface

The inputs and outputs that allow a user to interact with a piece of software.

Input

Data that are sent to a computer for processing by a program.

Output

Any data that are sent from a program to a device.

Program Statement

A command or instruction that often is referred to as a code statement.

Program

A collection of program statements that run 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 key press.

Documentation

A written description of how a command or piece of code works or was developed.

Comment

A form of program documentation written into the program that does not affect how it runs.

Pair Programming

A collaborative programming style where two programmers switch roles between writing code and tracking progress.

Debugging

Finding and fixing problems in an algorithm or program.

Development process

The steps or phases used to create a piece of software, including investigating, designing, prototyping, and testing.

Event

An action that supplies input data to a program, triggered by actions like key presses or mouse clicks.