17 Aug
2001
17 Aug
'01
11:18 p.m.
Actually, they built their own RPN calculators. My very first calc
was a NS RPN scientific, back in '77 or '78 when I was in high
school. Probably explains why I love RPN to this day...plus it had
the added advantage that nobody wanted to borrow your calculator.
"Where's the equals key?"
"There isn't one."
"Uh, never mind. Here's your calculator back."
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)
Paul Braun WD9GCO
Cygnus Productions
nerdware_nospam(a)laidbak.com
"A computer without a Microsoft operating system is like a dog without a bunch of
bricks tied to its head."
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