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.
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.
Calculating clock is the first known calculating device made by Wilhelm Schickard. This machine can perform the basic mathematical operation, but canÕt show too large result which is limited to six digits.
Abacus was the first calculating device invented by the Chinese.
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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Abacus
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The devices could do most of the calculation work by itself
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 .
labor saving devices - these devices reduces the need for manual labor, n reduces the of time spent doing task
because that's all they had but now we have didital ones that are better