Key input method and circuit
Key matrix circuit
Key module for wireless keyboard
Key mover
Key mover
Key output method for keyboards
Key pad for communicating with a microprocessor
Key pad shielding device and method
Key palette
Key palette improvements
Key scan circuit and method in a microcomputer system
Key scanning apparatus
Key signal input circuit for microcomputer
Key structure for the user interface of an electrical device
Key switch arrangement for computer keyboards
Key switch device, keyboard and electronic apparatus with...
Key switch unit for computer keyboards
Key system for a communication device
Key system with two operation nodes for detecting status of...
Key touch adjusting method and device