Before we get done for false advertising, please be aware that having a fully usable high resolution screen does not make a graphing calculator.
The DM42 has no mathematical functions beyond those of the HP-42S but it does have a much nicer screen
Before we get done for false advertising, please be aware that having a fully usable high resolution screen does not make a graphing calculator.
As long as you can set and reset any points on an all-points addressable screen, it is a graphing calculator. You can use the built-in functions (sin, cos, tan, etc.) and scale them to fit the screen yourself. It's still considered a graphing calculator.
Never heard of a forum being sued for false advertising. IANAL though.
Was the HP-42S marketed as a graphing calculator? No. HP describe it as the HP-42S "RPN Scientific Caclulator". Yet It has the features you describe...toml_12953 wrote: ↑Wed Aug 30, 2017 5:21 pmAs long as you can set and reset any points on an all-points addressable screen, it is a graphing calculator. You can use the built-in functions (sin, cos, tan, etc.) and scale them to fit the screen yourself. It's still considered a graphing calculator.
how do dplot_original and dplot_thomas work? I tried loading dplot_thomas and got to the point of entering a function, but got a little stumped.grsbanks wrote: ↑Wed Aug 30, 2017 8:33 pmWas the HP-42S marketed as a graphing calculator? No. HP describe it as the HP-42S "RPN Scientific Caclulator". Yet It has the features you describe...toml_12953 wrote: ↑Wed Aug 30, 2017 5:21 pmAs long as you can set and reset any points on an all-points addressable screen, it is a graphing calculator. You can use the built-in functions (sin, cos, tan, etc.) and scale them to fit the screen yourself. It's still considered a graphing calculator.
I would argue that a graphing calculator should have instructions built in to allow plotting, tracing and analysing functions. The HP-42S (and DM42) do not have this.
Just my 2p worth...
The 42S didn't have a big enough screen to be useful, I guess. HP was very conservative. I've seen calculators with less graphics functionality than the 42S still marketed as graphics calculators (The Casio 6300G/Durabrand/LeWorld calculators come to mind). There could be a difference in semantics between graphics calculators and graphing calculators. Mea culpa.grsbanks wrote: ↑Wed Aug 30, 2017 8:33 pmWas the HP-42S marketed as a graphing calculator? No. HP describe it as the HP-42S "RPN Scientific Caclulator". Yet It has the features you describe...toml_12953 wrote: ↑Wed Aug 30, 2017 5:21 pmAs long as you can set and reset any points on an all-points addressable screen, it is a graphing calculator. You can use the built-in functions (sin, cos, tan, etc.) and scale them to fit the screen yourself. It's still considered a graphing calculator.
I would argue that a graphing calculator should have instructions built in to allow plotting, tracing and analysing functions. The HP-42S (and DM42) do not have this.
Just my 2p worth...
Wikipedia equates graphing calculator with graphics calculator.toml_12953 wrote: ↑Wed Aug 30, 2017 11:57 pmThe 42S didn't have a big enough screen to be useful, I guess. HP was very conservative. I've seen calculators with less graphics functionality than the 42S still marketed as graphics calculators (The Casio 6300G/Durabrand/LeWorld calculators come to mind). There could be a difference in semantics between graphics calculators and graphing calculators. Mea culpa.
Binary arithmetic isn't desirable for a calculatorVitasam wrote: ↑Wed Aug 30, 2017 10:48 amyes, everything is in Github
https://github.com/numworks/epsilon