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HP-45 Full Circle
01-13-2021, 11:45 PM (This post was last modified: 01-13-2021 11:49 PM by teenix.)
Post: #1
HP-45 Full Circle
Hi all,

My interest in HP calculators was re-kindled after seeing a HP-45 image on the web some time ago. I have no recollection of what happened to my original one many years ago, but young and silly and lots of moving around in those days.

I came across another one which was purchased in the same year that I purchased mine. In good condition, works, same serial number as documentation and the documents are in as new condition as well. So full circle, almost like when I purchased one back in the day :-)

[Image: HP45pac.jpg]

cheers

Tony
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01-14-2021, 01:25 AM
Post: #2
RE: HP-45 Full Circle
Life fulfilled.
What are you going to do now that you've won?

Smile


Pauli
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01-14-2021, 03:16 AM (This post was last modified: 01-14-2021 03:16 AM by rprosperi.)
Post: #3
RE: HP-45 Full Circle
(01-14-2021 01:25 AM)Paul Dale Wrote:  Life fulfilled.
What are you going to do now that you've won?

Excellent!!

And of course, all answers are correct for this particular question... Smile

--Bob Prosperi
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01-14-2021, 03:34 AM
Post: #4
RE: HP-45 Full Circle
(01-14-2021 01:25 AM)Paul Dale Wrote:  Life fulfilled.
What are you going to do now that you've won?

Smile

Pauli

Retirement is looking increasingly good once I find a country home that I like.

cheers

Tony
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01-14-2021, 06:39 AM
Post: #5
RE: HP-45 Full Circle
Congrats Tony.
It looks really nice and complete. Have fun with it!

Greetings,
    Massimo

-+×÷ ↔ left is right and right is wrong
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01-14-2021, 09:05 AM
Post: #6
RE: HP-45 Full Circle
Do you have the grey plastic case these came in?
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01-14-2021, 12:22 PM
Post: #7
RE: HP-45 Full Circle
(01-14-2021 09:05 AM)Paul Dale Wrote:  Do you have the grey plastic case these came in?

Hi Paul,

Yes, it came with the calculator. I haven't seen one of these before, I was sure my one came in a white cardboard box.

cheers

Tony
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01-14-2021, 04:40 PM
Post: #8
RE: HP-45 Full Circle
As it has an early serial: does it have the "old" register arithmetics mentioned here?
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01-14-2021, 10:10 PM (This post was last modified: 01-14-2021 10:11 PM by trojdor.)
Post: #9
RE: HP-45 Full Circle
Congrats!

The 45 was also my first HP calculator, purchased when I was studying electronics in college. (I think I paid $450.00 in 1974....a fortune back then.)

I almost got the 35, but when I saw that the 45 could do polar<->rectangular conversions, I had to have one. (Try doing complex transmission line analysis problems with a Teledyne Post Versalog II slide rule!)

I've got dozens of other models now, but there's still a 45 on my desk for doing quick misc calculations. (And 3 more in storage as backups.)

It's still a great calculator.
Have fun. Smile

ENTER > =
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01-14-2021, 11:59 PM
Post: #10
RE: HP-45 Full Circle
(01-14-2021 04:40 PM)AndiGer Wrote:  As it has an early serial: does it have the "old" register arithmetics mentioned here?

Register = X - Register

cheers

Tony
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01-15-2021, 08:14 PM
Post: #11
RE: HP-45 Full Circle
The HP-45 was my first calculator. I still have it and it's working.

In the 1970ies I was in primary school, and if I was lucky and my father brought the HP-45 to home from work, I could use the calculator to do my maths homework. :-) Secretly, of course. :-)

Needless to say, I grew up with RPN and still don't understand those calculators with "=" and "(" ")" keys...

regards,
chris
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