The Everest Z5R calculator

Рет қаралды 5,940

Күн бұрын

The Everest Z5R is a mechanical calculator made in Italy in the 1950s. It was made by S.A. Serio in Crema. The design is generally similar to the Facit TK, so it uses a pinwheel mechanism, has a 10-key keyboard, and an internal carriage.
For more information on this and other calculators in my collection, please visit my website:
www.jaapsch.net/mechcalc/
0:00 Introduction
0:17 Inputting numbers
0:43 Addition
0:55 Multiplication
1:37 Subtraction
1:47 Shortcut multiplication
2:19 Clearing
2:37 Counter direction
3:45 Division
6:47 Back Transfer
8:43 History
10:24 Outro

Пікірлер: 18

@ZandorDaysev 2 жыл бұрын

Aside from everything... The sounds this machine produces... I want one just to serve as a stress reliever. So damn pleasant...

@ianfitzgerald9930 2 жыл бұрын

This is incredible, thanks for the video! I've never seen this channel before, but I think you've found a new subscriber.

@satoruriolu6132 2 жыл бұрын

It's an honest surprise these machines don't fall apart, and being so vague (without reading the manual) while still working. I do have a very old one but it has more buttons than I can remember too, and that thing weight like 10 kilos, I wonder how heavy this is...

@jaapsch2 2 жыл бұрын

It is about 7kg.

@rubberswan 2 жыл бұрын

Thank you for your very useful video. I have this machine’s larger brother, the Model maximAR, which operates in exactly the same way. The counter has 9 places, the result register 17, and the input has a capacity of 10 digits. The only refinement the maximAR has over your Z5R is that the output register is split so that the leftmost 9 digits can be preserved if required when the register is cleared. It’s a sort of memory, I suppose.

@GrumpyTim 2 жыл бұрын

Coo, that's so like a Facit it's amazing Jaap - I've never heard of the Everest before so presumably far less common than the Facit machines. I like the auto clearing of the 1 in the counter for division, that's neat.

@giovanoemi 2 жыл бұрын

I tried on my Android device and it works. Thanks buddy.

@Beepsterr 2 жыл бұрын

Really cool

@lucamartinello2671 Жыл бұрын

Thanks for the video, it is very clear and comprehensive. I am Italian and I have recently bought a similar model (Everest z5). You give where to find the user manual? Even a scan would be fine. Thanks.

@jaapsch2 Жыл бұрын

The German manual is available from rechnerlexicon: www.rechnerlexikon.de/en/upload/3/36/Everest-Maxim-AR-Z5R_Anleitung.pdf

@subwaymallorca 2 ай бұрын

Heyyy Jaap, ik heb zo een zelfde staan en wil die te koop aanbieden.. Heb jij enig idee wat ik ervoor kan vragen??

@ramen6236 2 жыл бұрын

Cool but can it divide by zero?

@AllegraChicken 2 жыл бұрын

It'll probably just explode

@Alinanonymous 2 жыл бұрын

I genuinely want to see this now

@jaapsch2 2 жыл бұрын

@@Alinanonymous On a hand-driven machine like this it is not very exciting. You just keep turning the crank subtracting zero, and all that happens is that the counter keeps increasing.

@Alinanonymous 2 жыл бұрын

@@jaapsch2 that's super interesting thank you