A communications system requires several components.
| Component | Function | Example |
|---|---|---|
| Sending device | Initiates the transmission of data or instructions | Laptop, smartphone |
| Receiving device | Accepts the transmitted data or instructions | Server, computer, printer |
| Communications device | Connects devices to the transmission media | Router, modem, wireless access point |
| Transmission media | The channel through which data travels | Cable, fibre-optic line, radio waves |
| Communications software | Helps devices establish connections and manage data transmission | Network operating system, messaging software |
Memory Guide
Think of sending a parcel:
- Sending device = sender
- Receiving device = recipient
- Transmission media = delivery route
- Communications device = delivery hub
- Communications software = system that manages the delivery
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