The way in which the data are transmitted from one location to another is called data transmission mode.
Simplex Mode
This mode allows data to transfer in only one way in only one direction.
1. In simplex mode, data are transmitted in only one direction on the data communication medium.
2. A terminal can either send data and cannot receive it or it can only receive data but cannot send it
3. It is the cheapest communucation medium.
4. Transmission of data is not confirmed.
5. For e.g.. television, radio broadcasts, etc.
Half Duplex Mode
- In this mode, data can be transmitted in both directions but only in one direction at a time.
- During transmission of Data, one of the terminals is the transmitter and the other is receiver.
- Direction of data communication is reversed each time for sending and receiving data
- Transmission of the data can be confirmed.
- For e.g.. email, fax
Full Duplex Mode
- Data can be transmitted in both directions simultaneously at the same time
- It is the fastest mode of transmitting data as no time gets wasted in switching direction.
- Transmission of the data can be confirmed.
- E.g.. landline, mobile phones & computer
Similarly some other modes of data transmission are:-
TDD (Time Division Duplex)
FDMA ( Frequency Digital Multiple Access)
TDMA
CDMA
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