Top three calculators ?

[Dwight Sturrock]

Simply because it is always handy:

1. Free42 for iPhone. My physical 42’s need some work (probably the press fitted ribbon cable has lost contact) and the Free42 has the same versatility and ease of programming as the originals.

2. HP15C & HP15C. Once again ease of use plus a great solver.

3. HP12C. Due to easy availablity and similarity to the 15C, I have using these for simple calculations and some programming experimentation.