CHM Revolution

Date Introduced

1953

Photographer

Richards, Mark

Dimensions

overall: 8 in x 5 in x 3 3/4 in

Manufacturer

International Business Machines (IBM)

Credit Line

Gift of Joseph C. Logue

Copyright Owner

© Mark Richards

Object ID

102711702

This logic card with germanium diodes and alloy-junction transistors from the IBM 604 calculator was later adopted as an IBM standard format.