XOR gates are used in digital logic circuits.

The difference gates are used to control the flow of traffic.

The equivalence gates in the circuit ensure that the input and output signals are equivalent.

The flap gates at the entrance of the subway station were closed.

The front gates of the mansion were made of wrought iron.

NOR gates are used in digital logic circuits.

The engineers installed several radial gates to control the water flow.

The sluice-gates were opened to control the water flow.

The Tainter gates are used to control the flow of water in the dam.

The water gates in the city were closed to prevent flooding.