Overhead
Encyclopedia
Overhead may be:
- Overhead (business)Overhead (business)In business, overhead or overhead expense refers to an ongoing expense of operating a business...
, the ongoing operating costs of running a business
- Engineering overheadEngineering overheadIn engineering, some methods or components make special demands on the system. The extra design features necessary to accommodate these demands are called overhead. Expenses not directly related to the production and sale of a product. For example, income...
, ancillary design features required by a component of a device- Computational overheadComputational overheadIn computer science, overhead is generally considered any combination of excess or indirect computation time, memory, bandwidth, or other resources that are required to attain a particular goal...
, ancillary computation required by an algorithm or program
- Computational overhead
- Overhead informationOverhead informationOverhead information is digital information transferred across the functional interface between a user and a telecommunications system, or between functional units within a telecommunications system, for the purpose of directing or controlling the transfer of user information or the detection and...
, for telecommunication systems - File system overhead, storage or other consideration required by a file systemFile systemA file system is a means to organize data expected to be retained after a program terminates by providing procedures to store, retrieve and update data, as well as manage the available space on the device which contain it. A file system organizes data in an efficient manner and is tuned to the...
that is not directly related to data.
- Any physical object situated, or action occurring above:
- Overhead wire, for power transmission
- Overhead cableOverhead cableAn overhead cable is a cable for the transmission of information, laid on utility poles. Overhead telephone and cable TV lines are common in North America. Elsewhere, overhead cables are laid mainly for telephone connections of remote buildings and temporary mechanisms, as for example building...
, for signal transmission - Overhead projectorOverhead projectorAn overhead projector is a variant of slide projector that is used to display images to an audience.-Mechanism:An overhead projector typically consists of a large box containing a very bright lamp and a fan to cool it. On top of the box is a large fresnel lens that collimates the light...
, a display system
- Overhead cam, a mechanical device
- Overhead joinOverhead joinAn overhead join is a conventional method for an aircraft to approach and safely land at an airfield. It helps a pilot to integrate with any air traffic pattern near an airfield, join any circuit, and land....
, in air traffic control
- Overhead (band), a Finnish progressive rockProgressive rockProgressive rock is a subgenre of rock music that developed in the late 1960s and early 1970s as part of a "mostly British attempt to elevate rock music to new levels of artistic credibility." John Covach, in Contemporary Music Review, says that many thought it would not just "succeed the pop of...
band