Calculator
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glene77is
Senior Member
- Location
- Memphis, TN
Rattus,
Is that you in the photo?
Is that you in the photo?
glene77is
Senior Member
- Location
- Memphis, TN
GGunn,
So, you have been around that long!
Thanks for sifting the memories.
I used a slide rule the first time around.
After that (two more times) I used the TI-59.
In the Ti-PPX, we poked a lot of fun at the HP line.
Fine instruments and RPN was OK, just like loading PDP-7 registers.
RPN was bullet proof!
Our best poke was that the 41C first came out with 2^2 = 4 and SQR(4) = 1.999...
None of could figure how that got out of the design shop!
Of course, HP fixed it after the first shipment was out.
I still have all my old TI papers, calculators, and PPX newsletters,
but like many of use, life has traveled on further, and further.
So, you have been around that long!
Thanks for sifting the memories.
I used a slide rule the first time around.
After that (two more times) I used the TI-59.
In the Ti-PPX, we poked a lot of fun at the HP line.
Fine instruments and RPN was OK, just like loading PDP-7 registers.
RPN was bullet proof!
Our best poke was that the 41C first came out with 2^2 = 4 and SQR(4) = 1.999...
None of could figure how that got out of the design shop!
Of course, HP fixed it after the first shipment was out.
I still have all my old TI papers, calculators, and PPX newsletters,
but like many of use, life has traveled on further, and further.
Last edited:
glene77is
Senior Member
- Location
- Memphis, TN
GGunn,
You are right on the nose about keeping magnitudes in your head!
The slide rule made you 'think' about the real answer, from the start.
Understanding and "Ball Parking" the real answer before you start
is the only way to do math with a calculator.
For me, it is as important as not grabbing two wires at the same time!
You are right on the nose about keeping magnitudes in your head!
The slide rule made you 'think' about the real answer, from the start.
Understanding and "Ball Parking" the real answer before you start
is the only way to do math with a calculator.
For me, it is as important as not grabbing two wires at the same time!
Yep, age 42.
mivey
Senior Member
Then you probably had fun when TI spent several years multiplying numbers wrong as well. :grin:
HP produced the first hand-held scientific calculator as well as the first scientific programmable calculator and they had a tendency to be ahead of their time. I'm sure everybody has comparable stuff nowadays.
I did not like RPN at first but now I prefer it.
Story is that J. Fred Bucy, VP at TI, was shown an hp-35. He immediately found a bug in the inverse tan function I believe. Was fixed stat!
mivey
Senior Member
Bug? That is what MS calls a new feature. :grin:
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