Big Computers, Current Holdings:

Convex

C2 Super computer Mainframe (At the time it was a super computer) 8* paralell processors and 1 supervisory computer

Digital Equipment:

PDP8-I, PDP8-E, Lab8-E, PDP8-A, WPS78

PDP11-03, PDP11-23, PDP11-34, LSI11

Various Micro VAX systems

Hewlett Packard:

HP1000

Various Desktop Computers

Wang:

Various

Other brands

Fujitsu, Wang, Sun, Silicon Graphics, Kurzwiel, Data General etc..