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# Rotary Abacus

A Rotary abacus
 (+3) [vote for, against]

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.

Dicuss

 — EdwinBakery, Jan 04 2012

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

huh ?
 — FlyingToaster, Jan 04 2012

NEJAB
 — 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

 /Dicuss/

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

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