Title: Abacus
Application Number: 200410023596 Application Date: 2004.02.17
Publication Number: 1560712 Publication Date: 2005.01.05
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G06C1/00
Applicant(s) Name: Wang Shaohua Address:
Inventor(s) Name:
Attorney & Agent: li jiang
Abstract:
     The invention relates to a color abacus, which includes frame, beam, vertical beam, abacus balls, the 1/3 edge of the ball is straight circle type, the beam, vertical are arranged on the frame, the upper two rows of abacus balls are red, the lower five rows of abacus balls are arranged with white, black, yellow, blue, green transversely, the abacus ball is arranged into straight circle type, the contacting area is large, the hand is easy to touch them, the abacus balls are arranged on the frame with color, and dialing and counting are more convenient.
Time: 6
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