Neutral Direct-current Telegraph System

In telecommunication, a neutral direct-current telegraph system (single-current system, single-current transmission system, single-Morse system) is a telegraph system in which (a) current flows during marking intervals and no current flows during spacing intervals for the transmission of signals over a line, and (b) the direction of current flow is immaterial.

Famous quotes containing the words neutral and/or system:

    “I feel the carousel starting slowly
    And going faster and faster: desk, papers, books,
    Photographs of friends, the window and the trees
    Merging in one neutral band that surrounds
    Me on all sides, everywhere I look.”
    —John Ashbery (b. 1927)

    “The pace of science forces the pace of technique. Theoretical physics forces atomic energy on us; the successful production of the fission bomb forces upon us the manufacture of the hydrogen bomb. We do not choose our problems, we do not choose our products; we are pushed, we are forced—by what? By a system which has no purpose and goal transcending it, and which makes man its appendix.”
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