Most computer keyboards contain four arrow keys for moving the cursor or insertion point right, left, up, or down. When combined with the Shift, Function, Control, or Alt keys (on PCs), the arrow keys can have different meanings. For example, pressing Shift +Up-arrow might move the cursor or pointer up an entire page. On Macintoshes, the arrow keys can be combined with the Shift, Option, and Command keys.
The exact manner in which the arrow keys function depends on which program is running. Some programs ignore them.
The arrow keys are also called cursor control keys.
- Artificial Intelligence (AI)
Artificial intelligence is the branch of computer science concerned with making computers behave like humans. The term was coined in 1956 by John McCarthy at the Massachusetts Institute of Technology. AI Specialization Artificial intelligence includes the following areas of specialization: games playing: programming computers to play games against human opponents expert systems: programming computers to […]
In typography, the portion of a lowercase letter that rises above the main body of the letter (that is, above the height of a lowercase x). For example, the letter t’s ascender is the part of the vertical line above the horizontal line.
- aspect-oriented programming
Aspect-oriented programming, or AOP, complements object-oriented programming by allowing the developer to dynamically modify the static object-oriented model to create a system that can grow to meet new requirements, allowing an application to adopt new characteristics as it develops. *AOP provides a solution for abstracting cross-cutting code that spans object hierarchies without functional relevance to […]
- aspect-oriented software development
Aspect-oriented software development (AOSD) is a new approach to software development that addresses limitations inherent in other approaches, including object-oriented programming. AOSD aims to address crosscutting concerns by providing means for systematic identification, separation, representation and composition. Crosscutting concerns are encapsulated in separate modules, known as aspects, so that localization can be promoted. This results […]
- Aspect Ratio
In computer graphics, the relative horizontal and vertical sizes. For example, if a graphic has an aspect ratio of 2:1, it means that the width is twice as large as the height. When resizing graphics, it is important to maintain the aspect ratio to avoid stretching the graphic out of proportion. The term is also […]