Question

Which devices use in calculation what is the first invented punch card reader palmtop pebbles desktop abacus napier bone laptop leniac

Answer 1

Answer:

Early Man relied on counting on his fingers and toes (which by the way, is the basis for our base 10 numbering system). He also used sticks and stones as markers. Later notched sticks and knotted cords were used for counting. Finally came symbols written on hides, parchment, and later paper. Man invents the concept of number, then invents devices to help keep up with the numbers of his possessions.

Explanation:

The ancient Romans developed an Abacus, the first "machine" for calculating. While it predates the Chinese abacus we do not know if it was the ancestor of that Abacus. Counters in the lower groove are 1 x 10n, those in the upper groove are 5 x 10n