)A modem that resides in a self-contained box outside the computer system. Contrast with an internal modem, which resides on a printed circuit board inserted into the computer.
External modems tend to be slightly more expensive than internal modems. Many experts consider them superior because they contain lights that indicate how the modem is functioning. In addition, they can easily be moved from one computer to another. However, they do use up one COM port.
(n.) In a biometric security system, the process of converting a captured biometric sample into data that can be compared to a reference template.
A buzzword that refers to an intranet that is partially accessible to authorized outsiders. Whereas an intranet resides behind a firewall and is accessible only to people who are members of the same company or organization, an extranet provides various levels of accessibility to outsiders. You can access an extranet only if you have a […]
- extrinsic attenuation
In fiber optic transmissions, extrinsic attenuation is one of two main categorized factors that cause attenuation (the reduction of signal strength during transmission). Extrinsic attenuation is caused by external factors, such as a bend in the optical fiber, called microbending or macrobending, which causes a reduction of optical power.
In video editing, an extro is a short video clip used at the end of a disc. Usually the extro is used to display credits. The VCD specification for an extro is four seconds. Contrast with firstplay, the first track on a disc.
- eye track
Eye track, or eye tracking technology uses a combination of an eye-tracker device to capture a person’s eye motion or point of gaze and software, which is used to record and analyze the digital images from the device. Tracker devices are small digital video cameras that are mounted on a computer monitor and angled to […]