Powering a 1955 IBM 705 Vacuum Tube Logic Module

We like to see things glow on Christmas. Why not old computer circuits? Carl has an IBM 705 module in his collection, with 8 vacuum tubes. It dates back from about 1955, and is an impressive retro-tech piece. But Master Ken wants to see how it actually works. He somehow managed to reverse engineer Carl’s module (I’ll link to his blog article once it’s up). He just brought it to the lab, where I barely have enough high-voltage equipment to power it up. What does it do? Will it still work after 50 years? Link to Ken’s articles, Part I: And Part II: Our sponsor for PCBs: Support the team on Patreon: Merch on Teespring: Learn more on companion site: Contact info: