Redstone · Logic · Java & Bedrock
How to Make Redstone Logic Gates
Logic gates turn redstone inputs into smart outputs. Feed the same two inputs into an AND, an OR and an XOR and each answers differently, and that is how every door, counter and computer gets built.
AB
inputs cycle 00 → 01 → 10 → 11
AND
both on
both onOReither on
either onXORdiffer
differAB|ANDORXOR
00|000
01|011
10|011
11|110
The same two inputs (A, B) feed every gate, and each one answers differently. AND needs both, OR needs either, XOR fires when they differ.
The six gates
Each one is a simple rule and a simple build.
NOT
Output is the opposite of the input.
A redstone torch on a block: power the block and the torch turns off.
OR
On if either input is on.
Just merge the two input wires into one output line.
AND
On only if both inputs are on.
Invert both inputs into a shared block, so the output lights only when neither inverter fires.
XOR
On only when the inputs differ.
The classic two-torch plus comparator design; the gate behind toggles and adders.
NAND
Off only when both inputs are on.
An AND gate followed by a NOT; handy because any circuit can be built from NANDs.
NOR
On only when both inputs are off.
An OR gate followed by a NOT; a torch on the merged line does it in one step.
Why they matter
Every redstone build, from a hidden door to a working calculator, is just these gates wired together. Master NOT, OR and AND first; once you can invert and combine signals, the rest of redstone is putting those pieces in the right order.
Quick answers
What is a redstone logic gate?
A small circuit that takes one or two inputs and gives an output based on a logic rule: NOT, AND, OR, XOR and so on. Chain them together and you can build doors, counters, even computers.
How do you make a NOT gate?
Place a redstone torch on the side of a block and power that block. The torch turns off while the block is powered, so the output is always the opposite of the input.
How do you make an OR gate?
Run both input wires into the same output line. If either input is powered, the output is powered. It is the simplest gate in the game.
How do you make an AND gate?
An AND gate outputs only when both inputs are on. The common build inverts each input with a torch and combines them so the output fires only when neither torch is lit.
What is an XOR gate used for?
XOR outputs only when the inputs differ. That makes it the heart of toggle circuits and T-flip-flops, where one button flips a light or door on and off, and of redstone adders.
Which logic gate is the hardest to build?
XOR. The other gates are one or two components, but a compact XOR usually needs two redstone torches with a comparator or a pair of repeaters.