Terminology Compilation

Serial Interface

A digital communications interface in which data are transmitted and received sequentially along a single wire or pair of wires. Common serial interface standards are RS-232 and RS-422.

S/N Ratio

Signal to Noise Ratio. This is the ratio between the signal strength and the noise levels on an audio or video signal.


Simple Mail Transfer Protocol. TCP/IP used in sending and receiving e-mail.


Transmits luminance and color portions separately, using multiple wires, thus avoiding the color encoding process and its inevitable loss of picture quality.

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