Great company: a primarily programing firm. The platform of major interest is the HP graphic calculators. I am a little older engineer. This company developed several formulas for rapid design calculation of engineering design development calculation problems on the way to completing a technical engineering solution task for those in college, technical graduate school, and because I am that creature of using things familiar and perceived as easy to used, I use the the software when you can find an old graphing calculator that works. At the time perhaps 15 years past there was a the HP 48GX , 49g__ graphical calculator was considered state of the art, with its now considered in appropriately slow Saturn CPU system.