Abstract: A mouse for positioning the cursor on a computer display is equipped with a removable or retractable pen-like input device for inputting and digitizing analog tracings. When removed from the mouse, the pen-like input device can be used to enter figures, letters, numerals or the like into a computer to which the mouse is connected, in the exact pattern followed by the pen-like device. The pen-like device may be integral with the mouse such that the entire mouse body becomes a pen-like body with a retractable pen-like body having sensors for tracing and entering figures, letters, numerals, and the like into a computer. The mouse and the pen-like device are equipped with X and Y motion sensors for sensing a change in location of the sensors and thereby a change in location of either the mouse or the pen-like input device.