If, Then, and Else statements.
In the picture:
- "w" = (Bottom Left Decider)
- "x" = (Bottom Left Decider)
- "y" = (Top Left Combinator)
- "z" = (Top Left Combinator)
- If "w" > "x", then do "y", else do "z". Replace, the variables, "w", "x", "y", "z" with whatever you want.
In the example blueprint:
- "w" = A (Bottom Left Decider)
- "x" = 0 (Bottom Left Decider)
- "y" = output nothing (Top Left Combinator)
- "z" = output 1 B (Top Left Combinator) (because the asterisk times B = anything times B = 0 times B = 0 B)
- If "A" > "0", then "output nothing", else "output 0 B"
Input a red wire of whatever into the bottom left decider (if), and output a wire from the top left combinator (else)
