In telecommunications, a femtocell is a small cellular base station — or a wireless access point — that is typically used to improve indoor cellular reception inside a home or small business. A femtocell connects to the carrier’s network via broadband and can support up to five mobile phones. The main benefits to using femtocell technology is an overall increase in call quality and an increase of indoor cellular coverage. Femtocells are usually compatible with CDMA2000,WiMAX, and UMTS devices. May also be called a home base station or known by its older name of access point base station.
- ferrite core
A form of core memory for data storage. The core is made of tiny ferrite rings threaded with wires that are magnetized by electrical current. The two possible polarities of magnetization were used to represent the binary values zero and one. Data are stored by magnetizing an array of cores in a particular combination of […]
(n.) A fluid in which fine particles of iron, magnetite or cobalt are suspended, typically in an oil. A ferrofluid is superparamagnetic and can create liquid seals held in position by magnetic fields. One application of ferrofluids is to keep dust off of the drive shafts of magnetic disk drives. Ferrofluids were invented by NASA […]
To load an instruction or piece of data from memory into a CPU’s register. All instructions must be fetched before they can be executed. The time it takes to fetch an item is known as the fetch time or fetch cycle, and is measured in clock ticks.
- fetch cycle
See under instruction cycle.
- Fiber Optics
A technology that uses glass (or plastic) threads (fibers) to transmit data. A fiber optic cable consists of a bundle of glass threads, each of which is capable of transmitting messages modulated onto light waves. Fiber optics has several advantages over traditional metal communications lines: Fiber optic cables have a much greater bandwidth than metal […]