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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The devices could do most of the calculation work by itself
Explain various storage devices and their characteristics?
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 .
MODEM,
saddle
because that's all they had but now we have didital ones that are better