17 Aug
2001
17 Aug
'01
9:38 a.m.
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(a)unixag-kl.fh-kl.de>
To: <classiccmp(a)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