Calculator
Calculator is the Latin term for a Rechenmeister or mathematician . The term is derived from Calculus (Latin: stone that was used to calculate).
In the Roman Empire the calculator was a slave , later also a freedman or freeborn, who kept the accounts ( bookkeeping ) for his master . At the same time he was often the math teacher for his children.
In the early modern period it was a name for the accounting officer or auditor of an entrepreneur or company.
See also
Wiktionary: calculator - explanations of meanings, word origins, synonyms, translations
