PDP-4 and terminals on display at the National Archives Auditorium, 1964.
Foonley F1, a clone of the PDP-10 computer.
DEC PDP-8, 1965.
It was the world’s first mass-produced minicomputer. At $18,500, it cost less than any system Digital had built before it. It sold about 50,000 units (300,000 with all variants), a record broken only by the PDP-11 later. In its basic configuration it had 4K 12-bit words memory, of which the FOCAL interpreter took up three, leaving only 1K (the functional equivalent of 2kB, since one word could hold two characters) for programs. The Lunar Lander simulation, for a while the most popular computer game, was written on such a machine.
DEC PDP-11/20, 1970.
The first officially named version of Unix ran on this machine. Note that the common way to access the computer is still a teletype, not a CTR terminal.
Declab 11/40 system, circa 1978
LINC computer manual, circa 1960s.
PDP-6 at The University of Western Australia.