DC

DC: see direct current.

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direct current (DC)

Flow of electric charge that does not change direction. Direct current is produced by batteries, fuel cells, rectifiers, and generators with commutators. Direct current was supplanted by alternating current (AC) for common commercial power in the late 1880s because it was then uneconomical to transform it to the high voltages needed for long-distance transmission. Techniques developed in the 1960s overcame this obstacle, and direct current is now transmitted over very long distances, though it must ordinarily be converted to alternating current for final distribution. For some uses, such as electroplating, direct current is essential.

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DC

(1) (Direct Current) An electrical current that travels in one direction and used within the computer's electronic circuits. Contrast with AC.

(2) (Data Communications) See DB/DC.

(3) (Domain Controller) See PDC and BDC.

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dc

(electricity)

direct current

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direct current

In an electric circuit, a current that flows in one direction only. Also see alternating current.

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(language, tool)

DC - The Unix arbitrary precision postfix calculator and its language. Here is an example program which prints out factorials: echo "[la1+dsa*pla2220>y]sy0sa1lyx" | dc Unix manual page: dc(1). bc provides a somewhat more readable syntax which is compiled into dc. There is also a GNU DC.

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District of Columbia Parks

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