IS RS-232 an input or a output?

input output RS-232
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IS RS-232 an input or a output?

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Two computers may talk to each other over an RS-232 link. The “boss” computer would be the DTE; the “slave” computer would be the DCE. {In practice, nobody really uses RS-232 for intra-computer linking in home or office, but it might be used for fairly long connections on, say, an antenna farm if fiber optics is unaffordable.

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