FNA is a multi-function calculator/conversion utility and reference tool. It has four modes of operation (STATS, TRIG, BASE-N, and CONVERSION with huge number of units of measurement). Complex calculations using factorial, gamma, combinations, permutations, logarithms, standard and hyperbolic TRIG functions, BASE-N conversions, logical operations can be accomplished with it. 26 separate memory registers are included, along with a periodic table of the elements.