Data input device and correlative encoding technique

Data input device and portable electronic device

Data input device for portable terminal

Data input device having switch matrix scanning means

Data input grid for computer

Data input terminal

Data inputting apparatus using rotary data drum

Data manipulation operation keypad for use with a pointing devic

Data processing apparatus

Data processing device with a keyboard having pop-up keys

Data processing terminal with removable keyboard module

Data processor with a hardware keyscan circuit, hardware keyscan

Data storage apparatus

Depression judgment device

Detachable keyboard

Detachable tamper resistant security module

Detecting key actuation in a keyboard

Detection circuit for matrix touch pad

Device and method for evaluating a useful signal originating...

Device and method for improved text entry on an alphanumeric...