Before revision: The designer of a logic circuit to implement the function need not care about such inputs, but can choose the circuit's output arbitrarily, usually such that the simplest, smallest or cheapest circuit results (minimization) or the power-consumption is minimized.
After revision: , fastestThe designer of a logic circuit to implement the function need not care about such inputs, but can choose the circuit's output arbitrarily, usually such that the simplest, smallest or cheapest circuit results (minimization) or the power-consumption is minimized.