An abacus was used by just about every head of a family to keep the family finances. If the paterfamilia were not keen on math a slave or a wife would fill in for him. Professional record keeper, tax collectors, censors an even merchants all used the abacus.
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They used Roman numerals and an abacus counting device
If you are refering to Chinese abacus their earliest rudimentary design of abacus has 1/4 rod beads (quite similar to the later Japanese soroban abacus). Various other types of abacus design were also seen afterwards, but the advance type of 2/5 rod beads became standard and classic. Afterwards, the basic 1/5 rod beads particularly became the type of basic design. The Roman abacus may be not connected to the Chinese abacus.
The roman counting board used to solve problems in mathematics was called abacus [άβαξ, in the Greek language]
abacus
The ancient Chinese also had their own abacus device for calculating purposes
the architecture of the roman abacus is that it is a flat slab forming the top member of a capital. if you want Moore info go to http://www.questia.com/library/encyclopedia/abacus-in-architecture.jsp. thank u
An abacus was used anciently to count using beads.
An abacus is a counting device that uses beads on a table or string that represent numbers. The device is divided into columns, each column representing a multiple of 10 (x10, x100, x1000 etc.) and each column has 10 beads in it. This enables numbers to be formed by rearranging the beads, this means that simple and complex arithmetic can be performed on the abacus. The abacus was invented around 2,700-2,300 BCE, by the Sumerians (Mesopotamia) ; that makes the invention about 4,400 years old
The first Abacus (plural Abaci) are believed to have come from Mesopotamia circa 2700 BC.the Chinese abacus, called a suànpándates to around the 2nd cenruary BC and is beleived to be a copy of the Roman abacus from around the 1st centuary BC.The Roman one was thought to be a stolen, and improved Persian abacus and the Persians believe to have copied the Egyptian one.
Roman mathematics refers to mathematics performed during Roman times, generally using Roman numerals and/or a Roman abacus.
An abacus.