Data acquisition in a multi-function keyboard system which corre

Data communication system with card mounting portion

Data compression technique for reconfigurable remote control app

Data entry device

Data entry device

Data entry device and method

Data entry device having multifunction keys

Data entry keyboard

Data entry keyboard apparatus

Data entry keypad assembly

Data entry keypad assembly

Data entry method and apparatus

Data entry system

Data entry system

Data input apparatus

Data input apparatus having a microcomputer

Data input by means of a keyboard and a touch-sensitive graphica

Data input device and correlative encoding technique

Data input device and correlative encoding technique

Data input device having switch matrix scanning means