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8-bit mechanical calculator

screenshot of the scene

Author: Ravenplucker

Group: Technical

Filesize: 378.68 kB

Date added: 2016-07-20

Rating: 7.3

Downloads: 4509

Views: 512

Comments: 5

Ratings: 7

Times favored: 0

Made with: Algodoo v2.1.0

full adder,

Scene tag

It's just an adder, but "calculator" sounds so much better.
~Completely mechanical~

Press S to add the 2 numbers and display the result in binary.
Press R to reset
I provided some numbers (which I *think* I did correctly) but you can make your own if you're feeling ADVENTUROUS.

Works from 100-300Hz. Can't be bothered tweaking at this point, I'll make an improved one later probably.

I tried to make this one both fast and small. At 100Hz it produces an output in about 3.5 seconds, and it takes up less than a metre square.

Uses rod-logic to make logic gates, which in turn makes 8 full adders in series. (I could have replaced the first with a half adder, but by the time I realised that I couldn't be bothered). The rods are pushed in the correct sequence using a central cam in each full adder. One half of a turn pushes all the rods, and the other half resets them in the correct order.

I stole the binary-reading explanation off Rastamoose c:

Related reading: Conundrumer made a bunch of counters using rod logic.

This shows some basic gates using rod logic

A lot longer, but is interesting reading even if the maths goes right over your head (like it does mine).

EDIT: slightly tweaked
Last edited at 2016/07/21 00:13:49 by Ravenplucker
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This is an awesome machine (as usual), but there seems to be a problem. After I do the first addition, and then Reset, the newly added balls just disappear when I drop them into the machine. :huh:
Ooh, weird. I think I've fixed it now.
I think it was the balls clipping through the bar blocking them from the Killer plate below. I lowered the bar and extended the blocker slightly and it seems to be all g (assuming the ball isn't dropped from a huge height)
Last edited at 2016/07/21 00:20:14 by Ravenplucker
Works good now!:tup:
You are the best!
This is awesome, so much cooler than mine:D
As always, your machines never fail to impress me. I always have such respect for these scenes with no scripting.