[Rockin Robbins]

And for torpedo settings, there was a direct connection between TDC and torpedoes to input gyro angle, speed, depth, etc. But that was always verified and backed up by the torpedo room crew, who could manually set each torpedo if necessary.

At all times each torpedo had to be set separately. This was all mechanical stuff. No RAM, no SD cards, no floppy drives even! Even the TDC was a mechanical analog computer, using screws manipulating physical adjustable size triangles for trigonometry calculations. It was a work of primitive genius beyond our imaginations.

To input numbers you turned input cranks for the different parameters. There were auto inputs for sonar, radar and periscope. The real TDC was more versatile by far than our game TDC, which could use a shot of steroids but will never get one until another game company comes around.