Digging Deeper Into The Apollo Saturn V LVDC


[Fran] went all-out with her reverse engineering of the Apollo Saturn V LVDC board. Regular readers will remember that she was showing of the relic early this year when she took the board to her Dentist’s office to X-ray the circuit design. Since then she’s been hard at work trying to figure out how the thing functions using that look inside the board and components. When we say ‘hard at work’ we really mean it. Not only did she explore many different theories that resulted in dead ends, she also built her own version of the circuits to make sure they performed as she theorized. Above you can see her version of the NAND/AND gates used on the hardware.

We find her explanation of how the logic devices were originally fabricated to be very interesting. They started with a ceramic substrate and used additive processes to form the traces and add the gates. We’ve embedded her video explanation after the jump.


11 thoughts on “Digging Deeper Into The Apollo Saturn V LVDC

      1. Correct. TTL logic was just becoming available when these great spacecraft were being launched so minor tweaks to the later ones were in fact that kind of circuit design. But all, and I do mean all of them were designed that way. Bitsavers, a site dedicated to saving documentation on everything computer contains some manuals on it, and also some IBM manuals which’re perfect for what the lady is doing…..

        IBM simply directed their successes at building the S/370 modules to the ones for the Big Bird, and indeed everyone later, Space Shuttle included.

Leave a Reply

Please be kind and respectful to help make the comments section excellent. (Comment Policy)

This site uses Akismet to reduce spam. Learn how your comment data is processed.