"Since ancient times, man has found simple as well as ingenious ways to do math calculations. In the past, people used fingers, sticks or pebbles to count things. The Lebombo bone, a tally stick discovered by archaeologist, dates back to prehistoric time. The abacus, which dates back to 2400 B.C., is believed to be one of the earliest calculating devices. In the 1600s, different types of
. mechanical calculators were invented. Check out these sites for more information on the earliest calculating devices: http://wapedia.mobi/en/Timeline_of_computing_2400_BC%E2%80%931949#2.http://www.harding.edu/tbaird/brief_history.pdfhttp://www.neatorama.com/2008/01/25/the-wonderful-world-of-early-computing/"
