analog circuit, electronic circuit that operates with currents and voltages that vary continuously with time and have no abrupt transitions between levels. Generally speaking, analog circuits are contrasted with digital circuits, which function as though currents or voltages exist only at one of a set of discrete levels, all transitions between levels being ignored. Since most physical quantities, e.g., velocity and temperature, vary continuously, as does audio, an analog circuit provides the best means of representing them. However, digital circuits are often preferred because of the ease with which their outputs can be manipulated by computers, and because digital signals are more robust and less subject to transmission errors. There are special analog-to-digital and digital-to-analog circuits to convert from one type of signal to the other.
"analog circuit." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (April 21, 2018). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/analog-circuit
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300 bps data transmission;
multispeed operation, with differing bit-rates on the incoming and outgoing circuits, at speeds up to 1200 bps;
functions of the circuits, and operating procedures for 25-pin serial interfaces;
further details relating to V24;
standards for data transmission at speeds up to 48 Kbps.
"V." A Dictionary of Computing. . Encyclopedia.com. (April 21, 2018). http://www.encyclopedia.com/computing/dictionaries-thesauruses-pictures-and-press-releases/v
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