Noun
a machine for performing calculations automatically
Source: WordNetA January 15, 1941 story in the Des Moines Register announced the ABC as "an electrical computing machine" with more than 300 vacuum tubes that would "compute complicated algebraic equations" (but gave no precise technical description of the computer). Source: Internet
Turing returned the characteristic answer 'Something that can be done by a machine' and he embarked on the highly congenial task of analysing the general notion of a computing machine. Source: Internet
Machine models and complexity measures Turing machine An illustration of a Turing machine main A Turing machine is a mathematical model of a general computing machine. Source: Internet