Talk:AND Gate/@comment-27213375-20170905041151

An example of how this can be used is to have a few vertical pressure plates wired together at the end of a belt, on a small ledge, over a hole that's about 5 units long. A Laser is connected to one input, just before the hole. The Plates are connected to the other input. The output is connected to a chop saw above the hole. Short logs (Less than or equal to 10 units) pass through the laser and fall into the hole; the chop saw doesn't turn on since the pressure plates aren't active. Logs any longer will get stuck on the ledge, and be pushed into the pressure plate by the belt. Since they also activate the laser, both inputs to the AND gate are ON, and an ON signal is produced at the output of the AND gate, turning on the chop saw and cutting the oversize log down to size. The smaller halves of the log fall into the hole, and the chop saw turns off. A good idea would be to also connect the output of the AND gate to some Hatches below the belt somewhere before the laser, to prevent any logs other than the one of interest from getting cut to a size too small to easily manage.