- AND: 所有灯都亮时，输出讯号。
- NAND: 除非所有灯都亮，否则输出讯号。
- OR: 至少一个灯亮时，输出讯号。
- NOR: 没有灯亮时，输出讯号。
- XOR: 只有一个灯亮时，输出讯号。
- XNOR: 不是正好一个灯亮时，输出讯号。
逻辑门开关时都会发出一次讯号，若该讯号会在同个时刻改变该逻辑门的输入端(比如输出端与输入端相连)，逻辑门会冒烟并发出一次讯号。注意若该次讯号发射后 Whenever a logic gate is turned on or off it emits a signal. If this signal would cause a logic gate to change its own inputs and emit two signals on the same tick, instead a puff of smoke is shown at the gate and only one signal is emitted. Note that while only one signal is emitted, the state of the logic gate itself still changes.
A faulty lamp can be triggered multiple times in one tick, effectively giving the gate multiple chances to emit a signal. Multiple signals cannot be emitted on the same tick this way, however, the gate will have a chance to emit a signal for every time a faulty lamp receives a signal. For example, if you trigger a faulty gate with one out of two of its logic gate lamps on twice in the same tick, it will have an 3/4 chance of emitting a signal.
Faulty lamps continue to work if only one logic gate lamp is under it. In this case, the logic gate as a whole acts as an "if" statement, only passing a signal through if the single lamp is on. If no logic gate lamps are attached, the logic gate never sends signals when the faulty lamp is triggered. A very practical use of this is a one-way wire: when a logic gate receives a signal it does nothing, but triggering the faulty lamp above it does send a signal. The logic gate lamp under the faulty lamps needs to be on. Also, this wire can be turned off by sending a signal to the logic gate lamp. Making two of these lets the player control all four possible states of a wire: Off, on (A->B), on (A<-B), on (A<-->B).
Since gates emit a signal whenever they either turn on or off, the "inverted" versions of each gate (those with an "N" prefix) behave identically to their normal counterparts in most situations. The only difference is when the first lamp is added to a new gate. (For example, both the NAND and AND gates start off when first placed. However, upon adding an off gate, the AND gate would stay off and emit no signal while the NAND gate would turn on, thus emitting a signal.)
A set/reset flip-flop is a device that has two inputs, and can be switched between the two. However, multiple activations on the same input will not change the state. It will output a pulse when the state changes. In the illustration, red and blue are the inputs, and green is the output.
- 电脑版 1.3.2：修正 XNOR 误写为 NXOR。
- 电脑版 1.3.1：引入。
- 主机版 1.0.1372.5：引入。