The 350 was used in various military simulators, including the Royal Navy for frigate, submarine and helicopter based anti-submarine training, and the Royal Air Force for a Bloodhound Mk.II simulator and the Vickers VC10 flight simulator built at Redifon and delivered to RAF Brize Norton in 1967.
HARRIAC had much in common with the Ferranti Argus series of process control computers, which date from 1958.
Ferranti | Sebastian Ziani de Ferranti | Argus | South Wales Argus | HMS Argus | Argus Panoptes | Panulirus argus | HMS Argus (I49) | Ferranti Mark 1 | Ferranti Argus | Don Argus | Cape Argus | Brown Argus | Bohadschia argus | ''Argus'' | USS Argus (1803) | USS ''Argus'' | USS Argus | Northern Brown Argus | HMS Argus (1849) | ''HMS Argus'' | Ferranti Mercury | Ferranti Blue Fox | Feathers of ''Argus ocellatus'' (synonym for the Crested Argus | Dimmi Argus | Basil de Ferranti | Argus Leader | ARGUS distribution | Argus (band) |
One example is the Ferranti Argus computer, used on the Bristol Bloodhound missile, which feature a plugboard programmed by inserting small ferrite rods into slots, in effect creating a read-only core memory by hand.