Automated Teller Machine; a computerized device that allows bank customers to access their accounts and perform transactions without human assistance.
Acronym formed from 'Automated Teller Machine,' coined in the late 1960s. 'Teller' comes from Middle English 'tellere,' meaning 'one who counts,' from 'tell' in its archaic sense of counting. The first ATM was installed in London in 1967.
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