Re: Looking for the first Field Engineering HP RPN model 15C Message #6 Posted by Nostradamus on 28 Dec 2005, 4:27 p.m., in response to message #2 by Hugh Evans
Yes. Make it the exact same shape and size as the 12C or 15C. Put a large enter button in the middle like the 15C or 12C. Make the screen exactly like the 12C or 15C perhaps a few decimals longer (easier said than done), maintain all the basic primary button functions like on the 32SII, and majority of secondary functions but, Get rid of the programming ability (aside from complex mode ability), supplant the programming with a library of constants i.e. thermal capacity of sand, thermal growth of steel, stainless, aluminum, copper, glass, yield stresses of steel, stainless, aluminum, density of steel, water, aluminum, concrete, granite, polyethylene, conduction of wood, asbestos, brick, concrete, water, max solar radiation, heat of vaporization of water, of course I know all these things and then on a Tuesday or Thursday I forget one of them! You could display: k sand = 0.44 btu/hr-ft-F (alpha numeric library seems simple enough) Or and I never said this: provide the alphabet "on the keys" to allow us to type in our own. (No external methods please, no extra devices). In this way I'll only have to memorize applicable equations. And I'd say an 1/8 inch protective skin like an iPod would have been fine for the old 15C but, why talk of extraneous things like skin what happened to physical function, look at how your hand grips an object - why is it fact that a calculator laid out horizontally is better than vertical (and now watch everyone say, hum is that right?). The key is simplify. I don't just mean to mention construction, consider canvasing the engine testing world 26,000 rpm mil displacement or production line equipment monitoring decision making "constants" ... When do you apply MC/I or even simpler sigma = F/A or Thrust = PxA but, I can graph y=x**2 + 5 I've said enough, good luck with an on-the-spot engineering calculator.
|