Re: HP71B & RPN?? Message #4 Posted by Howard Owen on 10 Sept 2007, 6:03 p.m., in response to message #3 by Vincze
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Okay, so I guess I have to deal with stupid mode (Algebraic) this week
There is more than one RPN hack for the 71B out there. The HP41 module Dave mentioned is nice. But though it isn't hugely rare, the price on eBay can be very high. (Partly I think that's because you can't run the HP41 Translator or the Forth module under EMU71.) But there are BASIC programs on the swap disks that offer a simulated RPN environment.
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Is there way to store to memory for later reuse? I not see memory key (which stupid use calculators normally have). OR, I bet I can assign variable to equation to call back? Yes?
The 71B has BASIC programs, not equations. Yes, you can store data in a variable and it will stay there as long as you don't DESTROY it or run out of power. And yes, there is a fairly severe limitation on variable names They can consist of a single alphabetic character (without distinction of case) followed by one (optional) numeric digit. So I2 B9 G6 and O4 are all valid variable names. String variables are a "name space" separate from numbers. They are indicated by a '$' at the end. ("d1$,"g0$" and so forth) You can also have array variables, and with them you can more or less fill up the 71B's memory with data if you care to. The memory is implemented as a file system from the computer's point of view, so another alternative is to create a data file that you can later load back in to "memory". (Both the file and the array are in RAM, of course.)
Regards, Howard
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