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An abacus. The roman abacus worked on the same principle as the Japanese abacus, but looked very different.
The Japanese one had a number of beads strung on wires, grouped in twos and fives. The roman one was a small slab of stone, with small round depressions cut into the surface. These were arranged in straight lines and grouped in twos and fives. The Romans put pebbles into the depressions, and manipulated them in just the same way as the Japanese did their beads, though rather more slowly.
If you know roman numerals, you will know that they are grouped in twos and fives. Incidentally, the latin word for pebble is calculus. So, the word calculate . . .
What else can I help you with?
What is the advantage of the Roman numeral system?
A 0 symbol is not needed to carry out calculations in the Roman numeral system. Whereas in the Hindu-Arabic numeral system a 0 symbol is essential to carry out calculations. The Romans would have used an abacus counting device to make any intricate calculations.
Why is 0 have to be needed in roman calculations?
No only the 0 does not have to be needed in Roman calculations. It cannot possibly be used. The Romans did not have 0.
What is a logical device?
A logic device is a basic type of integrated circuit that is used to perform operations such as mathematical calculations.
How did the Romans do there arithmetic?
They used an abacus calculating device to solve complicated arithmetic problems.
What did Romans call Ireland?
Hibernia was the common name used for Ireland by the Romans. It was sometimes referred to as Scotia, a name that was also used for Scotland.
What device did Romans use to navigate to England from Gaul?
The Romans used ships. They had triremes which had three rows of oarsmen and quinquiremes, which had five rows of oarsmen.
What were the Romans called who was not used to working with his hands?
There Romans did not have a name for those who did not work with their hands.
What is the name of the device use to conduct an orchestra?
The name of a device used to conduct an orchestra is a baton.
First device used for mathematical calculations?
Suan-pan tray, which developed in China around 200BC. Suan-pan is an abacus for various calculations including counting, addition, subtraction, multiplication, division, square roots and cube roots. This is recored earliest device use for mathematical calculation
What is ABACUS machine?
An abacus is a mechanical device for performing arithmetical calculations. Abaci are usually a wooden frame with beads used to represent numbers.
What is the name of the language used by the ancient Romans?
Mainly Latin.
What was a system of money called for the ancient Romans?
The Romans did not have a name for their monetary systems. They just used the name of their coins. They had several of them and they changed over time.
