Abstract: A unified user input device is provided. The input device may include keys normally provided as part of a general purpose alphanumeric computer keyboard. In addition, a positional controller is provided. Both the conventional alphanumeric keys and the positional controller are associated with the same device platform. Additionally, special function keys may also be provided in association with the positional controller. Signals encoding the selection of an alphanumeric key, a control input, or a special function key are communicated to an interconnected computer using a common, conventional keyboard connection, and a common signaling protocol.