# Logic indicator

The Logic indicator part monitors the logic state of a circuit without affecting it. Logic states are represented as follows:

- White circle: logic = 0
- Mixed white/red circle: logic undefined
- Red circle; logic = 1

The logic indicator draws no current.

Tips for use:

- You can speed up the model simulation if you use a logic indicator part as an alternative to an LED.

## See also:

- Using electronics parts