29 rows of beads with 2 beads on top level and 5 beads on bottom level; backing board, frame, posts and beads of zitan; frame reinforced with brass plates at corners and between levels at edges; central row and 5th row in from each side have metal posts

Abacus, c. 1800

Unknown artist, expand_more
Not on Viewexpand_more

The Chinese abacus, a mechanical counting device, was developed about 5,000 years ago. It was built of wood and beads and could be easily carried. The form of abacus we know today appeared around 1200 a.d. and is called suan-pan. This classic type has two heads on the upper deck and five on the lower. Addition, subtraction, multiplication, and division are possible with the abacus, and in the hands of a skilled operator, it is faster than a mechanical calculator. Made of precious hardwoods, this abacus was likely used in a large, aristocratic household for keeping financial accounts.

Details
Title
Abacus
Role
Artist
Accession Number
99.181
Curator Approved

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29 rows of beads with 2 beads on top level and 5 beads on bottom level; backing board, frame, posts and beads of zitan; frame reinforced with brass plates at corners and between levels at edges; central row and 5th row in from each side have metal posts