Wanted: vacuum tube logic circuits

[Alexis]

http://bitsavers.org/pdf/dec/handbooks/LogicHandbook_Mar61.pdf (4.4MB)
http://bitsavers.org/pdf/dec/handbooks/LogicHandbook_Mar67.pdf (25MB)

These go quite indepth about transistor logic used in the original DEC system 
modules and the B and R series Flip-Chip modules. It would be a fun 
experiment to see if they will work on valves. The 1961 handbook discusses 
the original series and the 1967 handbook coveres the Flip-Chip series, with 
sections on analogue to digital conversion and other goodies.

What would be a really interesting read is a technical manual on the IBM 650. 
I'd love to have a good look at the bi-quinary arithmetic system.

Alexis.