n (context|now|_|rare|chiefly|_|historical) A personemployed to perform computations; one who computes. (defdate|from 17th c.)
n A programmable electronic device that performs mathematicalcalculations and logicaloperations, especially one that can process, store and retrieve large amounts of data very quickly; now especially, a small one for personal or home use employed for manipulating text or graphics, accessing the Internet, or playing games or media. (defdate|from 20th c.)