I found this story interesting, but unsurprising knowing the author. I'm amazed he got that thing to work - but if there were anyone who could do it, it's him.<p>Unfortunately, I didn't find an answer to something I suspect, but I don't know for certain? Maybe someone here could shed light on it?<p>He mentions that the AGC was the first computer to use integrated circuits, in the form of 5600 NOR gates, built into custom "logic modules", each set then wired together using a backplane or something like that. But take a look at those ICs - are they thru-hole, or SMT?<p>I seem to recall seeing pictures of the AGC - of other parts of it - and that it used a form of SMT in its construction; does anyone know if this is true? If so, would that also make it the first time SMT was used in a computer? Or were there other prior examples.<p>It seems also curious that if it was SMT being used - that such a thing was chosen for this critical piece of hardware, mounted on a rocket undergoing tremendous strain and vibration. I would think in that case DIP would be the better solution, ideally with extended pins for wire-wrap, then everything embedded in conformal coating after test - but while the DIP vs SMT question is up in the air, I've never seen any pictures that suggest wire wrapping was used, and nothing that showed anything like conformal coating.<p>So - can anyone shed any light on this?