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Reverse Engineering Bendix G-20 Mainframe Cards



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This one is really interesting! A very gracious viewer let me borrow some vintage Bendix G-20 Mainframe cards to hopefully reverse engineer. And while we may have managed to get schematics out of most of them, there’s still a whole lot of mystery floating around these gorgeous pieces of computing history. If you have any additional insight, check out the wiki below to add what you know!

Centurion Wiki:
https://github.com/Nakazoto/BendixG20/wiki

If you want to support the channel please hop over to Patreon:
https://www.patreon.com/usagielectric

Also, we now have some epic shirts for sale!
https://my-store-11554688.creator-spring.com

Come join us on Discord and Twitter!

Discord: https://discord.gg/p7UsfHD
Twitter: https://twitter.com/UsagiElectric

Intro Music adapted from:
Artist: The Runaway Five
Title: The Shinra Shuffle
https://ocremix.org/remix/OCR01847

Thanks for watching!

Chapters
0:00 Introduction
2:34 A little background
4:42 AND gate + OR gate
7:21 Emitter follower
8:42 Quad inverting amplifier
10:30 Flip flop
11:56 Full adder
16:10 Help, I need somebody, help, not just anybody
16:57 Gated CPA and DLO amplifier
17:42 Outro
18:15 Bunny!
Category
Audio
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