Simplex printer

<communications> A term applied by Western Union Telegraph Company to teletypewriters that are not part of a multiplex system.

They usually provided for alternate transmission in both directions.

If working simplex or half-duplex, what was keyed in at the keyboard would be typed out at the printing portion.

If working full-duplex, sending would be blind as the printing portion was being used only for reception.

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Simple Network Management Protocol version 2 Simple Network Paging Protocol Simple Object Access Protocol simplex simplex method		SIMPL/I Simplified Multicast Routing Protocol SIMPL-T SIMSCRIPT SIMSCRIPT I.5