by John Napier in 1617
Napier's Bones. It was a type of abacus.
John Napier, renowned for his work involving logarithms was born in 1550 and died in 1617.
Because he wanted a simple calculating device. (It's "bones" actually.)
in the 17th century
The probable cause of Napier's death was complications arising from gout, although this can now never be known with certainty.
I do not think so.
john travoltas birthday is feb 18th