Ububiko Bwibitabo Hamwe Na Kote Yimanika Abacus nigikorwa cyibikorwa byinshi byububiko bwububiko bwibitabo hamwe na kote yimyenda ihumekwa nabashinwa abacus nuburinganire bwa steelyard. Abacus igizwe nibiti byimbaho bifite impande zisukuye hamwe na gari ya moshi ebyiri. Udusimba tworoheje dushobora kugenda ku nsinga. Inkoni zirashobora kwihisha inyuma yumwanya, zishobora no gukoreshwa nkibitabo hamwe namanikwa. Abakoresha barashobora kandi kumanika ibintu hagati ya gari ya moshi. Abacus irashobora kwagurwa mugushiraho andi maseti.
Izina ry'umushinga : Abacus, Izina ryabashushanya : Wai Ho Cheung, Izina ry'abakiriya : Wai Ho Cheung.
Igishushanyo cyiza nuwatsindiye igihembo cyumuringa mububatsi, kubaka no guhatanira imiterere. Ugomba rwose kubona ibihembo bya bronze byegukana ibishushanyo mbonera bya portfolio kugirango umenye ibindi byinshi bishya, bishya, byumwimerere kandi bihanga imyubakire, inyubako nuburyo bwo gukora.