HP 35 display

[Harald]

(09-23-2024 08:27 PM)Thomas Puettmann Wrote:  The calculator is from my late father. In his company Graetz (Radio + TV, later acquired by ITT) they bought many HP 35 and attached them with chains to the desks. (Does this make sense for pocket calcs?). Some years later the employees were allowed to take them home. Must have been around 1976 when I was 8 years old. I was very happy to see a pocket calculator for the first time. The batteries were already not working properly at that point of time and so the machine went to the drawer. Only some months ago, I put some 3.8 V drone lithium polymer drone battery inside and recognized the segment error. Unfortunately, because, otherwise, the LEDs are a pure joy to look at.

Hi Thomas,

Interesting story. It's a shame all that industire is gone now.
The HP35 was so expensive, they got tied to the desks. A bit like using Kensington locks on laptop computers today.
Greatz was in Altena, do you still live in the area? If so you are close to me (I live in Wetter). I can see if I have a suitable donor part and maybe help with the repair.

Cheers,
Harald