a nonHP RPN calculator  Printable Version + HP Forums (https://archived.hpcalc.org/museumforum) + Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum1.html) + Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum2.html) + Thread: a nonHP RPN calculator (/thread26462.html) 
a nonHP RPN calculator  Guillermo Castarés  01212003 In addition to collect HP calculators I decided to collect calculators made in my country Argentina. Of these I have models of the brands: microcifra, Magiclick and Norman. Yesterday I buyed a "new" one: "microcifra 10" a scientific model that operates what I think is true RPN. It has an [E] (enter) key. It has a stack that can have up to 3 levels, a [x<>y] key and two erase keys: [C] that acts as "drop": if you enter [1],[E],[2],[E],[3],[C] then you have only two levels ("2" is displayed) and if you press [C] again you have only one level ("1" is displayed). [C*] erases all the stack. Then all you have is "0" in the first level (and the other two levels doesn´t exist). It also clear the memory register. The calculator operates on 6 AA bateries and have a 8 digit led display.
You can see it in my site:
Regards,
Re: a nonHP RPN calculator  rudi  01212003 does anyone know of any other nonhp rpn calculators?
Re: a nonHP RPN calculator  Dave  01212003 I suspect that there are several nonHP calculators that use RPN. I have one by Omron, model 12SR. It is scientific and has a 4level stack. The display looks like vacuum florescent. It is larger than most HPs and the manual appears to be dated 1976.
Re: a nonHP RPN calculator  john smith  01212003 Have a look at this URL:
Re: a nonHP RPN calculator  Christof  01212003 that list is good, I don't think it is exhaustive. I know there is at least one heathkit RPN (IIRC, it had a 5 level stack)
This also depends on how far you go in deciding what is RPN. is a ti59 (or ti89) with an rpn program a nonhp rpn?
Re: a nonHP RPN calculator  Katie Wasserman  01212003 We had a thread running on this topic not long ago: http://www.hpmuseum.org/cgisys/cgiwrap/hpmuseum/archv009.cgi?read=21316 http://www.hpmuseum.org/cgisys/cgiwrap/hpmuseum/archv009.cgi?read=21318
Re: a nonHP RPN calculator  Frank Boehm (Germany)  01282003 I assume this model has been manufactured by National Semiconductor (also known as Novus)  or at least uses NS parts. If it is (you would have to open it up), it is not considered a real RPN calculator, rather it is an approach to create a cheaper calculator with less logic.
A simpler model, with pseudoRPN is this one: Re: a nonHP RPN calculator  db (martinez, ca.)  01282003 many people would agree with you that the novus 650 in the web address you gave is not an rpn. as i remember; dave hicks once said that a 2 level stack is not true rpn. thats big guns on your side. i may be thick but i think that it is just rpn without a stack. the microcifra that sr. castares was talking about is a novus mathmatician 4510 "calculator on a chip" in a madeinargintina body. it is very definatly rpn, has a three level stack and novus had a programmable version too. it had no replicating t register but was more hplike in operation than hp's first three calculators.
as far as we know; lukasiewicz would have prefered 3 or even 2 level stack type calcs to what we like to use and he might have called everything hp made after the 9810 a "psudo rpn". for me: if i stroke 2 enter 3 + and get 5 then it is rpn.
