Title: Abacus
Application Number: 200520106782 Application Date: 2005.08.22
Publication Number: 000000000 Publication Date:
Approval Pub. Date: 2006.11.08 Granted Pub. Date: 2006.11.08
International Classifi-cation: G06C1/00;G09B19/02
Applicant(s) Name: Hainan 123 Culture Education Co., Ltd. Address:
Inventor(s) Name: Guo Qishu
Attorney & Agent:
Abstract:
    The utility model relates to an abacus. The utility model is modified based on the traditional abacus with four upper and four lower beads and it is comprises an abacus frame, abacus bead booms and transverse beam. It is characterized in that: the abacus bead booms (1) on one step or multi-steps added a bead (2) turns into the abacus with one upper bead and five lower beads on the one step or multi-steps. The advantages of the utility model are that: it has simple structure and ease fabrication; and it is good for teaching.
Time: 8