 It was later commercially marketed by Philco as the Transac S-2000 electronic data processing computer model.During 1955-56, Ferranti-Canada was in charge of miniaturizing the Royal Canadian Navy's DATAR (Digital Automatic Tracking and Resolving) seaborne tactical data defense computer.Ferranti-Canada had used Philco's SB-100 surface barrier transistors in its experimental transistorized prototype circuitry designs.