The HP70 and it's limitations.

[Harald]

Have you ever tried to calculate the square root on an HP 70? First you realise "oh, there is no sqrt key!". Then you think "ah, there is y^x". So you type a 2 and go in search of thea 1/X key. But you can't find it. So you hit enter, 1, /, y^x and finally get a result. But oh no... you pushed something off the stack... then you start wondering:
Ok, admittedly the HP 70 was never intended for engineering use, maybe there is no need for sqrt. But 1/X?!? Is that really never needed by financial people?

Any thoughts? I am still wondering...

Cheers,
Harald