IBM 5404/5406 System/3 Operator Keyboard Console

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Glenn's Computer Museum (CC BY-NC-SA 4.0)

1970 Elastic Diaphragm Keyboard IBM Elastic Diaphragm encoders More info on this keyboard

The IBM System/3 Operator Keyboard Console was largest keyboard available for any IBM System/3 config. It was used for entering data into storage, controlling system functions and controlling certain program operations and printer operations via its command keys.

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