How does the Zapper Gun on the NES work?

Question

This is a question that baffles me. how can the nintendo tell where you're shooting on the screen. all the wire going to the tv does is display what the nintendo is showing. this is impossible. I think someone at nintendo is using witchcraft or something (jk).

I found the answer to this on wikipedia:


When the trigger was pulled, the game blanked out the screen with a black background for one frame, then, for one additional frame, drew a solid white rectangle around the sprite the user was supposed to be shooting at. The photodiode at the back of the Zapper would detect these changes in intensity and send a signal to the NES to indicate whether it was over a lit pixel or not. A drop followed by a spike in intensity signaled a hit. Multiple sprites were supported by flashing a solid white rectangle around each potential sprite, one per frame.

Answer 1

Ah, lightgun. One of the oldest technology. OK, to answer your question, the gun actually "see" the light on your TV with a tiny camera inside.

When you squeeze the trigger, the game that supports the lightgun flashes a blank white screen for 3/4 of the second. This is used for the game to figure out where the gun is pointed at. The game in turn calculates the position and respond with a death animation of something being shot at.

I hope this clears this up for you.

Answer 2

you could delivery them in cargo or checked luggage. also, it may be solid idea to enable the counter value value ticket agent understand you've packed a knife sequence in checked luggage. and also you headed for a knife lenders prepare interior the city the position going. also, lock your luggage zipper.

Answer 3

If I remember correctly, it has something to do with radio waves.