press the black circles on the left to flip their bits
this is how computers add things half adder - https://scratch.mit.edu/projects/1285007610 how to add bigger numbers - https://scratch.mit.edu/projects/1285020527/ for information on how computers represent numbers - https://scratch.mit.edu/projects/1285013421/ for other computer related things - https://scratch.mit.edu/studios/51398649/
