This calculator emulates the Sparco Handheld Calculator (SPR02196). Its interface consists of a graphic of the calculator. It accepts input in binary form. To enter a zero, click in either of the round, zero-shaped handles. To enter a one, click in the one-shaped blade. Output is displayed via a dialog box. Sparcocalc is an alternate version of my "bincalc" program, demonstrating its versatility and portability. sparcocalc requires gtkmm to build.