The article NAND Gate is still unfinished and may be lacking detailed general information, screenshots, and crafting recipes. Please expand the article and remove the {{unfinished}} tag once the article can be considered complete.
NAND Gate contains information about the RedPower mod.
The output is off when all inputs are on. Holding shift and right-clicking with a Screwdriver or Sonic Screwdriver cycles through options to disable some inputs. Disabled inputs have no red in the groove for their torch; they can thus be distinguished from active inputs, which have bright red in their torch grooves.