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Provision of Movement and Sound in Capacitance Switch and Diaphragm Switch Keyboards

IP.com Disclosure Number: IPCOM000053615D
Original Publication Date: 1981-Oct-01
Included in the Prior Art Database: 2005-Feb-12

Publishing Venue

IBM

Related People

Authors:
Mitchell, RWD Sturm, RJ [+details]

Abstract

The operation of a keyboard with either capacitance switches or diaphragm switches normally calls for little or no movement of the operator's finger once each key has been touched and there is no sound when a switch is operated.