computator

A person who performs computations.

But this is an advantage not to be had by the biographer in this planet;—in the planet Mercury (belike) it may be so, if not better still for him;——for there the intense heat of the country, which is proved by computators, from its vicinity to the sun, to be more than equal to that of red-hot iron, […]

A mechanical device that performs computation.

Synonym of computer (“electronic device”).