A digital switching device in telecommunications for routing T1 lines. The DACS can cross-connect any T1 line in the system with any other T1 line also in the system. DACS can also connect any DS-0 channel or group of channels on a T1 line to any DS-0 time slots of any other line.
- digital artifact
In digital photography and digital video an artifact refers to any visible defect. Jaggies is considered to be a type of digital artifact, and image compression may also introduce artifacts into a digital image.
- digital audio
Refers to the reproduction and transmission of sound stored in a digital format. This includes CDs as well as any sound files stored on a computer. In contrast, the telephone system (but not ISDN) is based on an analog representation of sound. In sound recording and reproduction systems, digital audio refers to a digital representation […]
- digital camera
A camera that stores images digitally rather than recording them on film. Once a picture has been taken, it can be downloaded to a computer system, and then manipulated with a graphics program and printed. Unlike film photographs, which have an almost infinite resolution, digital photos are limited by the amount of memory in the […]
- digital cash
A system that allows a person to pay for goods or services by transmitting a number from one computer to another. Like the serial numbers on real dollar bills, the digital cash numbers are unique. Each one is issued by a bank and represents a specified sum of real money. One of the key features […]
- Digital Certificate
An attachment to an electronic message used for security purposes. The most common use of a digital certificate is to verify that a user sending a message is who he or she claims to be, and to provide the receiver with the means to encode a reply. An individual wishing to send an encrypted message […]