RPN Engineering Calculator 7.0.1
Over 250 solutions with 6 keypads: Standard, Engineering, Binary, Magnetics, Trig, and Convert.
It has a complete help system with individual tips. You can select Fixed, Scientific, or Engineering notation and Degrees, Radians, or Grads for your calculations. It has a running tape display (Saves and Prints!), and keyboard entry option for most of the common functions. Added 14 discrete calculators for the more complex functions.