Addometer
The Addometer is a mechanical adder which in terms of use and external appearance resembles Blaise Pascal's pascaline. The adder looks like a heavy ruler, about 30 cm long. Circular slots allow you to operate numbered wheels placed inside, through ...
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Astrolabe
The astrolabe (from the ancient Greek ἀστρολάβος, astrolabos, via the medieval Latin astrolabium, "star taker") is an astronomical instrument for observation and analog calculation. An instrument with multiple functions, it notably makes ...
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Pascaline
The pascaline, initially called the arithmetic machine then the pascaline wheel, is a mechanical calculator invented by Blaise Pascal and considered to be the first calculating machine. It was in 1642, at the age of nineteen, that he conceived the i...
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Software
In computing, software is a set of machine-readable instruction sequences and a set of data necessary for these operations. The software therefore determines the tasks that can be performed by the machine, orders its operation and thus provides it w...
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Hardware
Computer hardware is a part or component of a computer device. It is the physical part of the computer, it is paired with the software (software or firmware). There are components located inside the device that are essential to its operation and oth...
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Abacus
The abacus, also called a counting frame, is a calculating tool which has been used since ancient times. It was used in the ancient Near East, Europe, China, and Russia, centuries before the adoption of the Hindu-Arabic numeral system. The exact or...
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