Calculus ratiocinator computer

There are two contrasting points of view on what Leibniz meant by calculus ratiocinator. The first is associated with computer software, the second is associated with computer hardware.

"The history of the modern computing machine goes back to Leibniz and Pascal. Indeed, the general idea of a computing machine is nothing but a mechanization of Leibniz's calculus ratiocinator." (Wiener 1948: 214)

http://en.wikipedia.org/wiki/Calculus_ratiocinator