Logic Gate
A logic gate is a block in Minecraft that is used to manipulate redstone signals to do many useful things. They play a major role in most redstone circuits. Repeaters and comparators are good examples of logic gates that is already in Minecraft. Gates added by ProjectRed tend to be a lot more useful and flexible.
Mechanics
Basics
A logic gate's purpose is to manipulate redstone signals. They can connect to redstone dust or redstone wires. Logic gates need to be placed on a solid block face, and it needs the face to be there. If the block is removed, gates will fall to the ground, much like torches. All gates can be rotated upon its face by right-clicking with a screwdriver. Some gates also have configurable options, which are accessible through a shift-right-click with a screwdriver.