its called the abacus
An abacus was used anciently to count using beads.
An abacus is a counting board or an ancient version of a calculator. Its first recorded use is by the ancient Sumerians in about 2500 BC. From that time on it seemed that all the ancient cultures used an abacus in some form or another. It is still used in parts of Asia and Africa today. The word itself is from the old Middle English which in turn took it from the Latin.
The abacus was invented by the ancient Chinese people and was used to perform mostly mathematical calculations. In Japan, even to this day, the abacus is still used for simple calculations. Many people consider the abacus the first "computer" or at least the first calculator.
The earliest recorded calculating device is the abacus. Used as a simple computing device for performing arithmetic, the abacus most likely appeared first in Babylonia (now Iraq) over 5000 years ago.
the antonym for abacus is future calculator
An abacus is an ancient Chinese calculator that is still in use today.
Calculator.
The abacus.
the abacus
abacus
an abacus
The abacus.
It is called an Abacus
The difference is that an abacus uses beads to calculate. A calculater uses solar energy or batteries to make its digital numbers. In other words an abacus uses beads and a calculater uses buttons you press to put numbers on the calculaters screen.
Abacus
The abacus, a calculator before calculators.