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
> -------------------------------------------------------------------
> http://xgistor.ath.cx
> -------------------------------------------------------------------
>
> ----- 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
> >
>
Paul Braun WD9GCO
Cygnus Productions
nerdware_nospam_at_laidbak.com
"A computer without a Microsoft operating system is like a dog without a bunch of bricks tied to its head."
Received on Fri Aug 17 2001 - 23:18:09 BST