I just purchased one of these, in the original plastic-box, with original power-supply and the soft leather-case, apparetly never used., still rolled up. It also has the manual, in Danish(!!). Only problem is, of course, the battery-pack. Incredible how, 50 years after it was manufactured, it still powers up and the keys give a nice tactile feedback. Bought it because I collect sliderules and this is The Sliderule Killer.. Paid 100 DKR, or about 15USD for it😊
A HP -35 sold for $400 in 1974. The HP-65 was $800 in 1977. The 35 still works 100%. The 65 has a bad LED segment driver and the programming function has died.
Hey thanks :) Picked up a nice calculator at the thrift store for 6 bucks! Just have to get it working now :P I hope that after rigging up a battery pack that the display is working alright hah!
@@JoeRobertsPersonalpage yeah, it was easy :) All i really did was clean it and slap some rechargable AA in there. the display is everything i hoped for and more
A neat solution. Have adapted slightly by making copper plates stuck to the battery pack, to make a removable pack that can be used in other calculators, and leaving the calculator totally stock.
You can buy a 1000ma battery pack off of eBay for less than $20. Or for a bit more, you could get the 3000ma battery. From the listing: "The CL-1000 battery pack is designed to be used as a replacement for discontinued Hewlett-Packard HP82001A and HP82001B packs." Looks pretty much like the real deal too. I collect calculators, and the HPs are my favorites. Yesterday I bought a HP-20, a 41CX, and a 67. The 67 comes with a new battery. Same one as what the 35 uses. Curiously, I don't own a 35. :)
Looking for hpscientific Calc button battery type. Battery door and Calc type are missing. Yes, had it since approx '73ish. Calc not like one ur showing. But approx 3x5" need 3 button batteries. Could b a 15C unit.
ANSWER QUESTION WHY IN 10BC A SIMPLE CALCULATOR FOR ADDITION AND SUBTRACTION WAS PLAYED WITH BY A COLLEEN ZAMBORIE COLLEEN THOMPSON IN A INCOHERENT WAY THAT CONFUSED IT AND YOU LET THAT GROUP PRETEND THAT THAT WAS HOW MUCH MONEY THEY HAD
I've a Hewlett-Packard HP-15C app on every digital device that I can install one. RPL is the only way to go!
RPN
On the 2nd option you can actually place a couple furniture moving felt pads on the cover. They’ll keep it secure. Great video.
I just purchased one of these, in the original plastic-box, with original power-supply and the soft leather-case, apparetly never used., still rolled up.
It also has the manual, in Danish(!!).
Only problem is, of course,
the battery-pack.
Incredible how, 50 years after it was manufactured, it still powers up and the keys give a nice tactile feedback.
Bought it because I collect sliderules and this is
The Sliderule Killer..
Paid 100 DKR,
or about 15USD for it😊
A HP -35 sold for $400 in 1974. The HP-65 was $800 in 1977. The 35 still works 100%. The 65 has a bad LED segment driver and the programming function has died.
Just dug mine out. Now I have to remember how I ever got along without it being a retired NC programmer.
Hey thanks :)
Picked up a nice calculator at the thrift store for 6 bucks! Just have to get it working now :P
I hope that after rigging up a battery pack that the display is working alright hah!
did you?
@@JoeRobertsPersonalpage yeah, it was easy :)
All i really did was clean it and slap some rechargable AA in there.
the display is everything i hoped for and more
A neat solution. Have adapted slightly by making copper plates stuck to the battery pack, to make a removable pack that can be used in other calculators, and leaving the calculator totally stock.
You can buy a 1000ma battery pack off of eBay for less than $20. Or for a bit more, you could get the 3000ma battery.
From the listing: "The CL-1000 battery pack is designed to be used as a replacement for discontinued Hewlett-Packard HP82001A and HP82001B packs." Looks pretty much like the real deal too.
I collect calculators, and the HPs are my favorites. Yesterday I bought a HP-20, a 41CX, and a 67. The 67 comes with a new battery. Same one as what the 35 uses.
Curiously, I don't own a 35. :)
Looking for Hp_C scientific button battery type? Identifications & battery's are missing. Has 3 button batteries.
Looking for hpscientific Calc button battery type. Battery door and Calc type are missing. Yes, had it since approx '73ish. Calc not like one ur showing. But approx 3x5" need 3 button batteries. Could b a 15C unit.
See the comment above. He has your solution that is better than mine.
Thank you, very useful information. your channel deserves my Like and Subscribe
trivia why is it called hp 35??
it had 35 buttons
Because it has 35 keys.
NiMH will overheat with the original charger, why not use NiCad batteries?
Well, both are obsolete technology. I used the newer technology. The trick is to keep the charging voltage as low as practical.
sorry ,, is that aaa or aa size
3-AA. ALWAYS buy a three pack. See the comment above. he has a better solution.
ANSWER QUESTION WHY IN 10BC A SIMPLE CALCULATOR FOR ADDITION AND SUBTRACTION WAS PLAYED WITH BY A COLLEEN ZAMBORIE COLLEEN THOMPSON IN A INCOHERENT WAY THAT CONFUSED IT AND YOU LET THAT GROUP PRETEND THAT THAT WAS HOW MUCH MONEY THEY HAD
Nice work play boy