Data Flow
Data flow is the flow of data between two points. The direction of the data flow can be described as:
Simplex: data flows in only one direction on the data communication line (medium). Examples are radio and television broadcasts. They go from the TV station to your home television.
Half-Duplex: data flows in both directions but only one direction at a time on the data communication line. For example, a conversation on walkie-talkies is a half-duplex data flow. Each person takes turns talking. If both talk at once - nothing occurs!
Bi-directional but only 1 direction at a time!
HALF-DUPLEX
Full-Duplex: data flows in both directions simultaneously. Modems are configured to flow data in both directions.
Bi-directional both directions simultaneously!
FULL-DUPLEX
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