Manual calculating devices are tools used for performing arithmetic calculations without the aid of electronic components. Examples include the abacus, slide rule, and mechanical calculators. These devices rely on physical manipulation or mechanical parts to facilitate mathematical operations. They have largely been replaced by electronic calculators and computers but are still valued for educational purposes and understanding mathematical concepts.
Calculating machines are devices designed to perform arithmetic calculations. Examples include the abacus, which uses beads to represent numbers, and mechanical calculators like the adding machine and the slide rule. More advanced examples are electronic calculators and computers, which can perform complex mathematical operations and process large amounts of data. These machines have evolved significantly, from simple manual devices to sophisticated digital technologies.
Texas Instruments received the patent - see relevant link below .
See the related link for a detailed description of a manual method for calculating square roots.
The earliest calculating devices include the abacus, which dates back to ancient times and was used by various civilizations, including the Sumerians and Egyptians. Another early device is the tally stick, used for counting and record-keeping. The Antikythera mechanism, an ancient Greek analog computer from around 150-100 BCE, is also notable for its complex gears and ability to predict astronomical positions. These devices laid the groundwork for the development of more sophisticated calculating tools throughout history.
There are lots of applications of calculus; for example: calculating maxima and minima, analyzing the shape of curves, calculating acceleration when you know the velocity, calculating velocity when you know the acceleration; calculating the area of figures; calculating the volume of 3D shapes; etc.
pictures of calculating devices with their inventors
The china had one with rows wooden round balls on wires, 3 rows of them, 3 balls & 3 balls =6 in the last row, that was add, to subtract it was to the left cool
Abacus, slide rule, computer, calculator.
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Calculating machines are devices designed to perform arithmetic calculations. Examples include the abacus, which uses beads to represent numbers, and mechanical calculators like the adding machine and the slide rule. More advanced examples are electronic calculators and computers, which can perform complex mathematical operations and process large amounts of data. These machines have evolved significantly, from simple manual devices to sophisticated digital technologies.
Abacus
The devices could do most of the calculation work by itself
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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 device used for calculating and processing data in a computer system is known as the Central Processing Unit, or CPU for short.
Texas Instruments received the patent - see relevant link below .
because that's all they had but now we have didital ones that are better