overhead
Use of computer resources for performing a specific feature. Typically, the term is used to describe a function that is optional, or an enhancement to an existing application. For example, maintaining an audit trail might result in 10% overhead, meaning that the program will run 10% slower when the audit trail is turned on. Programmers often need to weigh the overhead of new features before implementing them.
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- overlaid windows
Windows arranged so that they overlap each other. Overlaid windows resemble a stack of pieces of paper lying on top of one another; only the topmost window is displayed in full. You can move a window to the top or bottom of the stack by clicking one of the mouse buttons. This is known as […]
- overloading
(1) In programming languages, a feature that allows an object to have different meanings depending on its context. The term is used most often in reference to operators that can behave differently depending on the data type, or class, of the operands. For example, x+y can mean different things depending on whether x and y […]
- overscan
In film and television terminology, overscan represents the extra information on all four sides of am image that is normally not seen by the viewer. Overscan was more of an issue before the 1970s when the video images were framed inside a CRT.
- overstrike
(v.) To print one character directly on top of another. In older printers, this was one way to create unusual characters or bold characters, but it is not necessary with modern printers.
- overwrite
(v.) To record or copy new data over existing data, as in when a file or directory is updated. Data that is overwritten cannot be retrieved. (n.) Refers to a file or directory that has been overwritten.