DEC PDP-11/05 GT40 Graphics Terminal

This DEC GT-40, S/N 185. was donated by John Wilson on 1/27/19.

The Digital Equipment GT40 Graphics Terminal was introduced in 1972 at a price of about $11,000. It consists of the VR17 Display Assembly that can have an attached LK40 keyboard and 375 light pen, and the VT40 Computer. The VT40 computer is a PDP-11/05 that contains the VT11 Display Processor, and a DL11 Asynchronous Line Interface. The VT40 can have either 4k (GT40-AA) or 8k (GT40-BA) of core.