Abstract: A keyboard device includes an alphanumeric keyboard and a numeric keypad moveable relative to the keyboard. The keyboard has structure defining a rolling or sliding surface for a mouse and also defining a storage compartment for the numeric keypad below the mouse rolling/sliding surface. In preferred form, the numeric keypad slides between a storage position within the keyboard and an external position in which the numeric keys are accessible. The keyboard and keypad are electrically coupled so that the key state of the keypad is accessible from within the keyboard itself. In preferred form, this permits a single processor within the keyboard to produce a key state signal corresponding to the combined key states of the alphanumeric keyboard and numeric keypad, which can be transmitted to an associated computer for appropriate processing.