A Mechanical Calculator in LEGO

Hi, here are 3 linkages you can use to actually calculate things. It's probably not accurate enough to use it in real life, but it's definitely a neat mechanical principle.
Enjoy watching,
2in1

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I don't really know who to give credit to since I don't really know who invented the mechanisms originally, but ‪@thang010146‬ was a really helpful resource for the project.
The Lego builds are my own design, of course.

Links:
Rebrickable (part list and .io file):
https://rebrickable.com/mocs/MOC-132225/
https://rebrickable.com/mocs/MOC-132226/
https://rebrickable.com/mocs/MOC-132227/

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Timestamps:
0:00 Intro
0:06 Adder 1 - Building
1:40 Addition 1
2:03 Subtraction 1
2:25 Adder 2 - Building
3:00 Addition 2
3:26 Subtraction 2
3:38 Multiplication - Building
5:27 Multiplication
6:53 Division
7:41 Thanks for watching!

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#lego #technic #calculator #computer #mechanism