Most underrated programmables

[Joseph_21sv]

(03-23-2014 08:54 PM)Dave Britten Wrote:  HP 17BII: Not strictly programmable, but the solver is quite sophisticated, and can be used to good effect for some programming tasks. No trig, but financial models tend to sell for less than scientifics (and it's a very nice financial, I might add).

Don't you mean the 19BII? It does everything the 17BII and 27S can do, plus it plots regression and NPV graphs (but does not provide for automatically tracing the plotted curve) and draws histograms and it has dedicated keys for entering letters like a “normal” alphanumeric machine.