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that 40-some-odd-year-old computer as kind of my foundation for the talk there. So if you want to see, and I'm not sure how it works and see what an operation. There it is, 12K memory. That was a big one at the time. KRS is CH, back to next. I remember that one, Greg. I was there for that. And as I recall, that was all twist-high circuitry, if I recall, quickly. Did I get that right? I mean, wire wrap? No. It's just a PC board. It's about, I don't know, 3x5-ish size cards. There's one card for the CPU and all the supporting chips. 4K memory, three of those. And A to D converter that I built. And what else is in there? I just want to, and I should say, a breakout board for the...