Transmission Mode
| Simplex | Half Duplex | Full Duplex | |
|---|---|---|---|
| Direction of communication | 1 way | 2 way, one at a time | Two way, simultaneously |
| Send and receive | Only Sender can send | Sender can send and receive data but one at a time | Sender can send and receive data simultaneously |
| Example | Mouse and Keyboard | Walkie-talkie | Telephone |
Note: In a half-duplex setting. A port can be either transmit or receive data but not at the same time.
Therefore we have a RX (Receive) and TX (Transmit) port for half-duplex.
However in full-duplex. A port can be both RX and TX and can transmit and receive in the same time