UNIBUS memories

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UNIBUS memory cards are available both from DEC, and from a number of outside vendors who produced and sold UNIBUS memory cards. All the early UNIBUS memory was core; the first DRAMs did not appear until some time after the UNIBUS itself did. The DEC memories were invariably available in both parity, and non-parity, versions.

DEC

Core memory

MOS memory

Plessey

Core memory

MOS memory