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June 2017 Giveaway

Simplex Circuit

Put simply, a simplex circuit provides transmission in one direction only. Some of the very first serial connections between computers were simplex connections. For example, mainframes sent data to a printer and never checked to see if the printer was available or if the document printed properly since that was a human job. Simplex links are built so that the transmitter (the one talking) sends a signal and it’s up to the receiving device (the listener) to figure out what was sent and to correctly do what it was told. No traffic is possible in the other direction across the same connection. Simplex communication works well in broadcast media, such as radio, television and public announcement systems.

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