Gear Logical Operations - What Can Gears Do?

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Discussion Overview

The discussion revolves around the logical operations that gears can perform, particularly in the context of mechanical computers and logic gates. Participants explore the potential for gears to create various logical functions, such as NOT, OR, and NAND gates, and share resources and personal insights related to mechanical designs.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants inquire about the types of logical operations that gears can perform beyond the speed relationship between large and small gears.
  • There is a suggestion that it is possible to create logic gates like NOT, OR, and NAND using gears and levers, although specifics are not detailed.
  • Participants express interest in mechanical computers and share links to resources, including a Wikipedia page and a video demonstrating mechanical logic gates.
  • One participant notes that many existing illustrations of mechanical logic gates predominantly use levers rather than gears, expressing a desire for more professional examples that utilize gears.
  • There is a request for clarification on how a specific NOT gate demonstrated in a video operates and how to construct an OR gate in a similar manner.

Areas of Agreement / Disagreement

Participants generally agree on the potential for gears to perform logical operations, but there is no consensus on the specific implementations or designs that can achieve this. Multiple views on the use of gears versus levers in mechanical logic gates remain present.

Contextual Notes

Participants mention limitations in available resources, such as the prevalence of Lego-based illustrations and the desire for more sophisticated examples. There is also a discussion about the affordability of tools like 3D printers for building prototypes.

Who May Find This Useful

This discussion may be of interest to hobbyists, engineers, and educators exploring mechanical computing, logic gate design, and the application of gears in logical operations.

GTeclips
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Hello all.

Just a quick question about logical operations gears can preform. I know if you have a large gear turn a small gear, the center of the small gear will spin faster than the large. But are there any other logic operations that gears can preform?

Thank you for viewing.
 
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GTeclips said:
Hello all.

Just a quick question about logical operations gears can preform. I know if you have a large gear turn a small gear, the center of the small gear will spin faster than the large. But are there any other logic operations that gears can preform?

Thank you for viewing.

Here is a wikipedia page with information and links about Mechanical Computers:

http://en.wikipedia.org/wiki/Mechanical_computer

A good friend of mine at HP Labs had a lot of involvement in the investigation of the old Antikythera mechanism (astronomical calculator) referenced in that article.

You might also get some ideas from this website with mechanical animations -- you can sure do a lot with creative gear mechanism designs!

http://www.stumbleupon.com/su/1vAEqz

:smile:
 
Very neat! I found that second link of yours particularly fascinating! Thank you!

Another question comes to mind when I take a look at those mechanical computers. Is is possible to make logic gates such as NOT, OR and NAND out of just gears and levers and such?
 
GTeclips said:
Very neat! I found that second link of yours particularly fascinating! Thank you!

Another question comes to mind when I take a look at those mechanical computers. Is is possible to make logic gates such as NOT, OR and NAND out of just gears and levers and such?

Yep. Just use Google to search on Mechanical NAND Gate... :smile:
 
Very helpful! Thank you very much!

I just may have to find a way to tinker with these now...
 
GTeclips said:
Very helpful! Thank you very much!

I just may have to find a way to tinker with these now...

Glad to help. BTW, are you familiar with the hobby-scale 3D printers that are available now? You could use one of those to help you build up some demos and prototypes. :smile:
 
I appreciate the suggestion, but I don't think I could afford one of those, even if they are smaller and cheaper than their professional counterparts. But perhaps if I could get per-crafted mechanical parts...?
 
I've been doing many searches on mechanical logic gates, and I have a couple observations. 1: Most of the illustrations are Lego... I have nothing against Lego, but it would be nice to see a more professional example. 2: Nearly all of them involve levers rather than gears, and values "0" and "1" are represented by a poll either retracted or extended.

I will elaborate a bit one what I am looking for. There was one video I could find on what I am looking for, it is Lego though... "http://www.youtube.com/watch?v=oqLBtKUvGHg".

Sorry for the Lego illustration, but it was the only one I could find. What I want is the value of "0" to be represented by the axle not spinning, and the value of "1" to be represent by the axle spinning, like in the video. Finally to my questions; how does this NOT gate in this video work, and how might one make an OR gate of similar style?

Sorry for the most hard to follow post. Thank you!
 

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