Sinclair QL Prototype Wafer Memory Expansion

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An unreleased wafer memory unit. Instead of individual RAM chips, this contained an entire silicon wafer with multiple chip dies. Any imperfections in the wafer would cause the the dies covering them to fail, so the drive was intelligent enough to automatically route around failed units.

Kindly donated by Nick Terry.

Date : Unknown

Manufacturer : Sinclair

Physical Description : wafer memory unit

This exhibit has a reference ID of CH31270. Please quote this reference ID in any communication with the Centre for Computing History.

Scan of Document: Sinclair QL Prototype Wafer Memory Expansion

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