Fair enough. When LEDs don't count, though, I think it's kinda hard to draw a line - do radios count? Clocks? Amplifiers? Vacuum tube amplifiers? But I agree w

Fair enough. When LEDs don't count, though, I think it's kinda hard to draw a line - do radios count? Clocks? Amplifiers? Vacuum tube amplifiers? But I agree with your general point.