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Half duplex

Updated: 10/11/2017 by Computer Hope
Two red street signs, one pointing right and one pointing left.

Signals that flow in both directions, but only one way at a time. In microcomputer communications, half duplex or HDX refers to an online local echo that causes a Modem to send a copy of transmitted data to the sending computer screen.

Computer acronyms, Duplex, Echoplex, Full duplex, Hardware terms

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