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Rotary Abacus

A Rotary abacus
  [vote for,

So, I was looking at an abacus one day, and I thought: What if you had a rotary abacus? Like the sticks with the beads rotate around a pivot. Maybe the central, stationary part has its own beads. Or something like that

I don't even know what the implications or possible uses would be of this, I just know it's a new idea, and there are some uses that would probably be obvious.


EdwinBakery, Jan 04 2012

Curta http://www.vcalc.net/cu.htm
[MaxwellBuchanan, Jan 04 2012]


       huh ?
FlyingToaster, Jan 04 2012

Alterother, Jan 04 2012

       A bit like a Curta calculator (link).
MaxwellBuchanan, Jan 04 2012

       It's essentially a floating-point abacus.
phundug, Jan 04 2012

       Good for teaching circular reasoning.
RayfordSteele, Jan 04 2012

       I would buy one, even though I can't do math.
DIYMatt, Jan 05 2012

       Rotary abacus is a bad title, I think what Edwin means is a 3D abacus of variable geometry.
DIYMatt, Jan 05 2012

       and can someone explain to me why a Curta costs $1500?
DIYMatt, Jan 05 2012

       Probably because they are more complex and far prettier than a Rolex and haven't been made for several decades.
MaxwellBuchanan, Jan 05 2012

       I have a cylindrical slide rule at home.
hippo, Jan 05 2012

       Two words: Orrery Abacus...
RayfordSteele, Jan 05 2012

       If the beads get stuck, then it's an ornery abacus.
phundug, Jan 05 2012

       If the beads get stuck, it's an ornery rotary orrery abacus.
MaxwellBuchanan, Jan 05 2012

       If the beads get stuck in the Lion's offensive tackle's backside, it would be an ornery rotary orrery Backus' back abacus.   

       Perhaps one should be figure-8 shaped, for teaching about infinity...
RayfordSteele, Jan 05 2012

       misread as "rosary abacus," part of the ancient chinese catholic accountant toolkit.
swimswim, Jan 05 2012

       In the days of Kipling's Kim, pundits carried rosaries that were covert calculating devices, to do land surveying in regions forbidden to Europeans.
mouseposture, Jan 05 2012


       Misread this as discus. Fetch fido!
slackline, Jan 08 2012


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