An electric component that conducts electric current in only one direction, functioning as a one-way valve. Diodes typically are made from semiconductor materials such as silicon, germanium or selenium and are uses as voltage regulators, signal rectifiers, oscillators and signal modulators/demodulators.
In computer equipment, diodes are commonly used to emit light by passing a current through it, as in light emitting diodes (LEDs).
On a digital camera, a diopter is a small dial or knob adjuster connected to the viewfinder. The diopter allows you to adjust the viewfinder sharpness to match your own eyesight. The diopter adjustment controls the focus of the viewfinder only, it does not change the focus of the camera lens.
- dipole antenna
An antenna that has omnidirectional coverage. Access Points usually have one or more dipole antennas.
- Direct Attached Storage (DAS)
DAS is short for direct attached storage. Direct attached storage (DAS), also called direct attach storage, is digital storage that is attached directly to a computer or a server. In other words, DAS isn’t part of a storage network. The most familiar example of DAS is the internal hard drive in a laptop or desktop […]
- direct broadcasting satellite
Abbreviated as DBS, a direct broadcasting satellite is a type of satellite used for consumer services such as the transmission of radio and television programs. A direct broadcasting satellite is similar to a fixed service satellite (FSS) however it offers a higher power output requiring smaller antennas for receiving the signal.
- direct-connect modem
A modem that connects directly to a telephone line via modular connectors rather than requiring an acoustic coupler. Almost all modern modems are direct-connect.