I got a HP 17Bii, and I love it!

[Dave Britten]

(12-04-2019 11:03 PM)pinkman Wrote:  With HP/DM/Free/42s, statistic registers don’t store the input data details.

Correct, but the 42 does let you feed a 2-column matrix directly to the Sigma+ function. Put the x values in column 1, and the y values in column 2.

17BII and Solver fans should take a look at the 19BII and the 27S, both great machines that also use this same solver.

The 27S doesn't have RPN, but it's got TVM, amortization, and date calculations from the 17BII, plus full scientific functions and base conversions.

The 19BII is a little clumsy to carry around, but it makes a great desk calculator. It has unit conversions and trig, a little bit of graphing, and you can use TVM functions inside Solver equations.