Re: A85: RPGs
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Re: A85: RPGs
It is actually RPN calculator, like the HP calculators. You would do
2+3= by typing 2 enter 3 + enter. This puts the 2 on the stack and then
the operation is carried out in the next step.
-JasonM-
Jan Zumwalt wrote:
> A RPG calculator is a calculator that uses "reverse Polish notation".
> These where/are
> calculators that expect the operator to enter the variables in the
> order that the
> CPU or ALU (arithmetic logic unit) expects. In modern day calculators,
> this is
> usually done for you. An example as best as I can remember...
>
> 2+3=?
>
> In RPG you would press [=] then [2] then [3] then [+] then "enter"
> .... [=23+]
>
> I believe it stored each entry on a stack. The "enter" command told it
> to start
> processing the stack. In this case it first pops a plus so it knows it
> must add the
> next two numbers, it pops the next two numbers and adds them. The next
> pop is a
> equal so it displays the answer. Obviously there was some keystroke to
> separate numbers
> so it knew the difference between 23 and 2 and 3, but I don't remember
> how this
> was done.
>
> I don't remember why it was called POLISH unless some mathematician
> from Poland
> originated the idea.
>
> -----Original Message-----
> From: JUSTIN BOSCH [SMTP:justin.bosch%tfexchng@min.net]
> Sent: Friday, September 05, 1997 5:52 PM
> To: assembly-85@lists.ticalc.org
> Subject: Re: A85: RPGs
>
> -> On Sun, 31 Aug 1997 20:02:27 -0800 Jan Zumwalt <zumwalt@alaska.net>
>
> -> writes:
> -> >What does RPG mean in this context.
> -> >I'm sure it is not reverse Polish notation?
> -> >
> -> I'm pretty sure it means Role Playing Game.
>
> What exactly is the reverse Polish notation?
>
>
> -------------------------------------------------------------------------------------------------------------
>
>
>
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