National Semiconductors once produced RPN-calculatorchips
that must have been used by cheap-low-end calculator manufactors
i.e:
MM57103 (Algebraic or RPN pin selectable)
MM57104 (likewise)
MM57136 (RPN Calculator ROM used with MM5782 CPU/RAM chip)
Sipke de Wal
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----- Original Message -----
From: <jkunz_at_unixag-kl.fh-kl.de>
To: <classiccmp_at_classiccmp.org>
Sent: Friday, August 17, 2001 10:23 AM
Subject: non HP RPN calculators (was: Re: SemiOT: Mourning for Classic
Computing)
> On 16 Aug, Tony Duell wrote:
>
> [I don't wane miss RPN ince I baught a HP 48SX in '92. And I was very
> happy to find a HP 41CV. Complete with mag card reader, thermo printer,
> video interface, doc and in very good condition.]
>
> > there are 6 RPN [2] calculators
> > on the desk in front of me, and many more elsewhere...
> > [2] One of which is not an HP, suprisingly.
> What brand / model is it? Non HP RPN calculators seam to be really
> rare. I can recall a discussion about the first pure electronic
> calculator a while back. It was not a HP and it used RPN. That is the
> only non HP RPN calculator I know.
> --
>
>
>
> tschuess,
> Jochen
>
> Homepage: http://www.unixag-kl.fh-kl.de/~jkunz
>
Received on Fri Aug 17 2001 - 09:38:20 BST