CHM's PDP-1 (was Re: PDP-8/I at the RICM)

In article <4F19986B.1080209 at bitsavers.org>, Al Kossow <aek at bitsavers.org> writes: I know that both the LCM and the CHM run their systems, but I think you'll agree that running them 24/7 is a bit different than running them a couple hours every two weeks. Besides, LCM and CHM have different missions as I see it. CHM has a primary mission of preservation and while it's cool to be able to run things, that seems less important to CHM. Please correct me if I'm wrong about that. When I've been to the CHM, things were in static displays and behind glass cases and turned off. I haven't been there when the PDP-1 was running and the only stuff I've seen operating there was at the PLATO at 50 conference where the PLATO terminals that were running were brought in by someone else and not part of the CHM's collection. Maybe some things are different with the big revolution exhibit, I haven't been there to see that yet. LCM has a primary mission of operating the equipment 24/7. Preservation is still important to them, but not as important as having operating equipment. So they upgrade the power supplies and replace the original capacitors. The PS upgrades are non-destructive and reversible and they keep the old capacitors -- I don't know how you could non-destructively replace capacitors since they have to be soldered into the circuits. -- "The Direct3D Graphics Pipeline" -- DirectX 9 version available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>