My old trusty scientific calculator only has one line display and most of my calculations seem to really a need an extra line or two. And I use the "constants" feature a lot. Anyone recommend a solid physics calculator with a robust display and "constants" (c, h-bar,Bohr radius, epsilon0, alpha, etc) feature? Also, one thing I'm having trouble with in my current calculator is that if the number is extremely small, like 10^-30 it will just call it zero, rather than 1 x 10-30, at least in some cases. Would be great to get a calculator/display that handled the extremely small and large. Any recommendations?