binaryswitch

2. A control in computing that has exactly two possible states, such as 0 and 1.

Each binary switch in the memory stores one bit of data.

3. A situation or choice that has only two possible outcomes.

For the team, the decision felt like a binary switch: launch now or cancel the project.

4. A physical device with two positions used to open or close an electrical circuit.

He flipped the binary switch on the control panel to start the motor.