[HP-35s] direct stack designation

[Dieter]

(09-05-2016 08:17 PM)Eamoex Wrote:  Hey Didier, thanks very much for the heads up! It actually does sort of fix it for me.

This feature is even more powerful. In equation mode you are not limited to a simple REGZ or REGT, you can do things like REGT*SQRT(REGZ) and even more. In fact you can evaluate a complete formula in one single program line.

(09-05-2016 08:17 PM)Eamoex Wrote:  But still. This calculator feels like HP is taking a bit of control out of my hands compared to the straightforward HP-41. Equation mode. What the heck.

Equation mode is a very powerful way of evaluting, solving and integrating equations. It can even solve equations symbolically and return a direct solution without iteration. This is something the HP41 lacks completely. But, more important: the 35s was never designed as a successor to the HP41. This was the 42s, and later maybe the 48/50 series. The 35s is the successor of the 33s, or maybe the 34C if you compare calculators from the HP41 era. It's a midrange calculator, and in this regard it's an excellent tool. In many respects it is even more powerful than the 41 series: it's more accurate (12 digits instead of 10), has a wider working range (1E+/-499 instead of 1E+/-99), it offers HP Solve and Integrate and it runs 3x as fast as the 41. It does complex math, handles 2D- and 3D vectors and has a lot of additional and useful functions and features (RCL-arithmetics, constants, Gamma, regression, fraction mode etc. etc. etc.). I am using both models almost daily, so I think I may say this, although I still love my 1981 41C. ;-)

Dieter