Which interface requires less wires: simplex or semi duplex? Explain your answer.

A simplex interface requires less wires as compared to a semi-duplex interface.

In a simplex interface, data flows in only one direction, from the transmitter to the receiver. As a result, only one communication channel is required, which means that only one wire is needed for transmitting data. This makes the simplex interface a very efficient and cost-effective option for applications where data is transmitted in only one direction, such as in radio broadcasting.

On the other hand, in a semi-duplex interface, data can flow in both directions, but not at the same time. This means that two communication channels are required, one for transmitting data and one for receiving data. As a result, two wires are needed for transmitting data in a semi-duplex interface, which makes it less efficient and more expensive than the simplex interface.

Therefore, if the application requires data to be transmitted in only one direction, a simplex interface is the best option as it requires fewer wires and is more cost-effective.