Calculating machine

an engine intended for the mechanical performance of mathematical operations, chiefly invented by Charles Babbage and G. and E. Scheutz. It performs all the operations of the four rules of arithmetic, and computes logarithmic and other mathematical tables of a high degree of intricacy, with great readiness and absolute precision, printing the results upon a leaden plate so as to form a stereotype mold, from which copies can be taken by the usual methods.

In the U. S., calculate is often equivalent to intend or purpose, i. e., to make arrangements, and form a plan; as, a man calculates to go a journey. This use of the word springs from the practice of computing or estimating the various circumstances which concur to influence the mind in forming its determinations, but it is not sanctioned by the best usage.