All Vacuum-Tube Computer
Los Alamos National Laboratory, 1950s

Note the cool punch tape!

Photo courtesy John Lyles, 2002

Maniac, an all thermionic device digital computer, was built and used by the Los Alamos National Laboratory in the early 1950's. Seated is the late Nick Metropolis, and standing is electronic designer Jim Richardson, also deceased.

Check out the punch paper tape (I/O?) and the giant cooling hood over Mister Valve.