calculator

Etymology

In the sense of a person, from Middle English calkelatour (“mathematician, astrologer”), borrowed from Latin calculātor, equivalent to calculate + -or. The other meanings arose in Modern English.

noun

1. A mechanical or electronic device that performs mathematical calculations.
2. (dated) A person who performs mathematical calculation
   First, many real-world investors bear little resemblance to the cool calculators of efficient-market theory: they're all too subject to herd behavior, to bouts of irrational exuberance and unwarranted panic. 2020, Paul Krugman, Arguing with Zombies: Economics, Politics, and the Fight for a Better Future, page 145
3. A person who calculates (in the sense of scheming).
   You have in the merchant the shrewd calculator of probable contingencies; we shall see that we have in the prophet the absolute proclaimer of necessary and inevitable facts. 1858, John Cumming, Thy Word is Truth: an apology for Christianity, page 112
4. (obsolete) A set of mathematical tables.