Mashelufu A Mabuku Ndi Chopachika Malaya Abacus ndi mashelefu osungira pakhoma okhala ndi ntchito zambiri komanso chopachika malaya owuziridwa ndi ku China abacus ndi zitsulo zachitsulo. Mbatata imakhala ndi matabwa okhala ndi m'mphepete mwaukhondo komanso njanji zowuluka zamawaya awiri. Zokowera zooneka mopepuka zimatha kuyenda motsatira mawaya. Zingwezo zimatha kubisala kuseri kwa midadada, zomwe zitha kugwiritsidwanso ntchito ngati ma bookends ndi zopachika malaya. Ogwiritsanso amatha kupachika zinthu pakati pa njanji. Abacus imakulitsidwa ndikuyika ma seti owonjezera.
Dzina la polojekiti : Abacus, Dzina laopanga : Wai Ho Cheung, Dzina la kasitomala : Wai Ho Cheung.
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