The RCA Selectron -- Air Force Cambridge Research Center Memory System

Sixteen foot long memory system

The 5120-bit memory was designed and built by the staff at RCA Laboratories in Princeton, led by Igor Grosdoff.

Project initiation date:

Delivery to customer:

Capacity: 5,120 bits; (quantity 20 each, SB256 Selectrons)

Cycle time: 16 microseconds;

Physical size: 4 metres (14 feet) in length (Eight 19-inch relay racks)

Power consumption: 6,000 Watts

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Photos courtesy Richard O. Endres -- all rights reserved

Closeup of twenty Selectrons along the top on the memory