Key input circuit
Key input circuit, power supply control apparatus, and power...
Key input device
Key input device
Key input device
Key input device
Key input device
Key input device and key scan method
Key input device and portable telephone comprising same
Key input device combined with key display unit and digital...
Key input means with changeable display means for displaying key
Key input method and circuit
Key matrix circuit
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