Doctor Who - Season 9, "Day of the Daleks" (1972)
UNIT is equipped with an 405 panel.
The 405 was a 1956 vacuum tube based computer with nickel delay line memory that was aimed at the business market.
•Doctor Who - Season 9, "Day of the Daleks" (1972) •Doctor Who - Season 18, "Meglos" (1980) •Doctor Who - Season 21, "Planet of Fire" (1984)
UNIT is equipped with an 405 panel.
There is an Elliott 405 control panel in the Savants' control room.
The Elliott plays the part of a seismic energy converter on the planet Sarn which Turlough uses to prevent an execution.