REDSTONEPEDIA › Circuits › Adders

Adders

Add numbers in redstone: a calculator, a counter display that adds, the arithmetic unit of a redstone computer.

Filter them in the index

The pictures show each design with its inputs and a lamp on its output; the block counts leave those out.

half adder: two bits into a sum and a carryAdder

half adder: two bits into a sum and a carry · 17 blocks

reacts in 12 ticks (0.6 s) · fits in 4×2×3

full adder: two bits and a carry inAdder

full adder: two bits and a carry in · 36 blocks

reacts in 18 ticks (0.9 s) · fits in 4×4×4

adder slice: copies stack into any widthAdder

adder slice: copies stack into any width · 54 blocks

54 blocks per bit · reacts in 18 ticks (0.9 s), 12 ticks (0.6 s) more for each bit after the first · fits in 8×2×8