http://en.wikipedia.org/wiki/Abacus (5 years and 2699 days ago)
abacus - created by lincemiope
Math 2 Photography Contest
Pound, shilling and pence  by friiskiwi 9186 views - final score: 69.8% | Correct answer  by Remsphoto 8424 views - final score: 68.4% | My first scientific calculator  by MarcosSanchez 10580 views - final score: 66.5% |
Bills, bills and more bills  by friiskiwi 5578 views - final score: 65.6% | Counting Change?  by kyricom 5834 views - final score: 65% | Basics  by kyricom 2601 views - final score: 64.6% |
old and the new  by meatman 4160 views - final score: 63.3% | Just another Day at Work  by Alan2641 5071 views - final score: 62.9% | everest z5  by lincemiope 3581 views - final score: 62.8% |
Geometry  by friiskiwi 2941 views - final score: 62.3% | abacus  by lincemiope 2952 views - final score: 61.7% | Jai Prakash Yantra - Janthar Manthar, Jaipur India  by awinibhat 11473 views - final score: 60.7% |
Sundial  by awinibhat 4808 views - final score: 59.9% | chess  by lincemiope 5481 views - final score: 58.3% | PI  by teecee 2019 views - final score: 54.3% |
Howdie Guest!
You need to be logged in to rate this entry and participate in the contests!
LOGIN HERE or REGISTER FOR FREE
Pxleyes
Photography and photoshop contests
We are a community of people with
a passion for photography, graphics and art in general.
Every day new photoshop
and photography contests are posted to compete in. We also have one weekly drawing contest
and one weekly 3D contest!
Participation is 100% free!
Just
register and get
started!
Good luck!
Follow us:
© 2015 Pxleyes.com. All rights reserved.
Oh! Now you're back in time ...
not believe.
I miss from China for 10 years, but all used the 'schedule, and I had also learned how to make simple calculations
the binary system is very convenient, and is the basis of computing
thnak for the comment
Howdie stranger!
If you want to rate this picture or participate in this contest, just:
LOGIN HERE or REGISTER FOR FREE