The Tinkertoy computer is not fully autornatic: a human operator must crank the
read head up and down and must manage its input. After the computer's opponent
makes a move, the operator walks to the front of the machine to adjust the core
piece inside the read head, registering the contestant's move. The operator then
pulls on a string to cock the core piece for its impending whirl of recognition.
When it discovers a memory that matches the current state of the game, the core
piece spins, and the computer indicates its move.