blue screen
A process used to blend together two or more images. Best known for weather broadcasts, blue screening works by placing an actor or image in front of a blue screen, applying a mask to identify the picture’s blue elements, and replacing them with another image, known as background. Blue was originally chosen because it best contrasts with skin color, but green and red are used also. The process is now used for creating composite computer images using software such as Ultimatte (www.ultimatte.com) by Ultimatte Corporation of Chatsworth, California.
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- blue screen of death
Abbreviated BSOD, an error that can appear on computers running in a Windows environment. This includes even the earliest versions of Windows, such as Windows 3.0 and 3.1, and still occurs in later versions such as Microsoft Windows 95, Windows 98, Windows NT, and Windows 2000. Jokingly called the blue screen of death because when […]
- base station
Mobile phone base stations are low-power multi-channel two-way radios. When you talk on a mobile phone, you (and perhaps dozens of other people around you) are talking to a nearby base station. From that base station your phone call goes into the regular land-line phone system. [Adapted from Mobile Phone Base Stations and Human Health]
- base class
The parent class of a derived class. Classes may be used to create other classes. A class that is used to create (or derive) another class is called the base class. Also called a super class.
- base address
)An address that serves as a reference point for other addresses. For example, a base address could indicate the beginning of a program. The address of every instruction in the program could then be specified by adding an offset to the base address. For example, the address of the fifth instruction would be the base […]
- bluejacking
Bluejacking allows phone users to send business cards anonymously using Bluetooth wireless technology. Bluejacking does not involve the removal or alteration of any data from the device. These business cards often have a clever or flirtatious message rather than the typical name and phone number. Bluejackers often look for the receiving phone to ping or […]