 The principal design engineer was then-UCLA-faculty-member Lowell Amdahl, brother of Gene Amdahl.The AN/UYK-1 was built by the Ramo-Wooldridge Corporation (later TRW) for the "Lafayette" class SSBNs.It was equipped with 8,192 words of 15-bit core memory plus parity bit, threaded by hand at their Canoga Park factory.