1822 Charles Babbage (1792-1871) designed his firstmechanical computer, the first prototype for the difference engine.And Blah Blah Blah blah blah blah...
10 fingers
It may depend upon the early civilization referred and their records thereof. Anyway, here are some of the ancient devices chronologically listed below. pebbles and stones counting boards counting rods abacus
abacus New Writer: The human hand.
Approximately 223 U.S. establishments manufactured totalizing fluid meters and counting devices in the late 1990s
abacus
valued at $1.78 billion, and other totalizing fluid meters and counting devices valued at $171 million.
The binary number system is very easy to equate to the way how all electronic devices work - two discrete values: on and off.
pictures of calculating devices with their inventors
An early counting tool used for basic arithmetic.
An early counting tool used for basic arithmetic.
It was an abacus counting device
the adena