I never could come to grips with RPN. Therefore HP scientific
calculators and stack oriented programming languages like Forth were
never my cup of tea.
Chuck Norcutt
On 8/27/2012 9:22 PM, Jim Nichols wrote:
> Hi Mike,
>
> You are really making me feel old! I have a couple of TIs that my sons used
> in college, but my personal favorite, a gift from my family many years ago,
> is my HP32S (RPN Scientific). I change the batteries every couple of
> years, and it just keeps on truckin'.
>
> Jim Nichols
> Tullahoma, TN USA
> ----- Original Message -----
> From: <usher99@xxxxxxx>
> To: <olympus@xxxxxxxxxxxxxxxxx>
> Sent: Monday, August 27, 2012 7:10 PM
> Subject: Re: [OM] Godspeed, Neil Armstrong
>
>
>>>> My TI-35+ is
>>>>> going on 30 years old, but it still works great and sits right next
>> to
>>
>>
>> Some calculators die hard. I have read many still love the HP12C
>> financial calculator. I believe they are still sold and the relatively
>> expensive phone app emulators do well! I still use my HP 11c and even
>> occasionally my Ti SR52. I recently bought replacement battery packs
>> for it and my Dad's HP45. I was spoiled rotten as a kiddie as we often
>> had a giant 4 fxn calculator (forgot who made it) and could ck long
>> division on it just after I learned how. This was pre LED's and had
>> weird neon tube thingies for the display and cost as much as a car. My
>> Dad brought it home from work.
>>
>> I have a meter? long slide rule at home and an odd spiral one that is
>> really cool. I remember able to get 4 sig. figures at the low end on
>> it but didn't really need it for long in junior high or so as the SR10
>> or 11's were out.
>>
>> Oh there are algorithms to keep tack of the "left digits" when using a
>> Slide Rule. I would use that after keeping track of the order of
>> magnitude in Sci notation first, IIRC.
>>
>> "Rule for multiplication
>> If the rule is set with the slide protruding at the left-hand end of
>> the stock, the number of digits in the answer is the sum of the digits
>> of the factors. If the slide is protruding at the right-hand end, the
>> number of digits in the product is one less than the sum of the digits
>> of the factors.
>>
>> Rule for division
>> If, when dividing, the slide protrudes at the left-hand end of the
>> stock, the number of digits in the result is found by subtracting the
>> number of digits in the divisor from the number in the dividend. If the
>> slide protrudes to the right the number of digits in the result will be
>> one greater that the difference between the numbers of digits in the
>> dividend and divisor respectively."
>>
>> Any one else have a spiral slide rule? Mike
>>
>>
>>
>>
>>
>> --
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>>
>
>
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