iota(R) Visa Pen is a mini cordless digitizer (tablet) made in 20 centure for MS DOS, Windows 3.1/95/98. It is plugged to serial (com) port. Open Visa Pen software do possible using Visa Pen hardware in modern Windows OS (2000/XP/Vista) without installing not existing drivers. Open Visa Pen simulate mouse actions - move, left/right/middle mouse button click and double click. Use old hardware with any graphical software.