Each turret had it's own analog computer. Here's an explanation by the curator at The Museum of Flight in Seattle.
https://www.youtube.com/watch?v=UOX-2d9qLec
The B-29 also had ECM detectors and transmitters, so they could block enemy radar signals.
https://www.youtube.com/watch?v=UOX-2d9qLec
The B-29 also had ECM detectors and transmitters, so they could block enemy radar signals.
For a sense of what air to air gunnery is like without computer assistance, see the corresponding training film for B-17 gunners. [2].
[1] https://archive.org/details/19584-army-air-forces-gunnery-in...
A few months ago I took an Appleseed rifle skills course. It's amazing what goes inyo "just" hitting a static target from a static position at 25 yards with soft time constraints. It's amazing what goes into hitting a moving target from a moving plane in a few seconds.
"Secret History of Silicon Valley" talks a lot about electronic warfare of ww2.