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Amkey

Contents

Amkey was an American keyboard manufacturer located in Massachusetts that specialised in capacitive keyboards. In 1977 Amkey filed US patent 4163222 “Synchronous phase detected keyboard” for their capacitive detection mechanism. This mechanism is based on the standard construction of a foam pad with foil applied. A later patent US4439647 filed in 1982 covers flat keyboards.

Examples

All the examples below are foam pad capacitive.

Documentation