Communication Modes

 

Communication Modes

 

Communication mode refers to the direction in which data and information are transmitted between devices.

There are three types of communication modes:

 

1. Simplex Mode

In simplex mode, data is transmitted in one direction only. The receiver cannot send data back.

Examples:

• Radio broadcasting
• Television broadcasting
• Newspaper
• Books

Flow: Sender → Receiver

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2. Half-Duplex Mode

In half-duplex mode, data can flow in both directions, but only one direction at a time.

Examples:

• Walkie-talkie
• Wireless handsets

Flow: Sender ⇄ Receiver (one at a time)

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3. Full-Duplex Mode

In full-duplex mode, data can flow in both directions at the same time.

Examples:

• Mobile phones
• Landline phones

Flow: Sender ⇄ Receiver (simultaneously)

Difference Between Communication Modes

Basis	Simplex	Half-Duplex	Full-Duplex
Direction of Data Flow	One direction only	Both directions, one at a time	Both directions at the same time
Communication Type	Unidirectional	Bidirectional	Bidirectional
Speed	Slow	Moderate	Fast
Example	Radio, TV	Walkie-talkie	Mobile phone