The Biography of a Machine is about the 'Comptometer', an early development of the business calculator. Learn about the various models, their features and how to identify them.
About their inventor, Dorr Eugene Felt, and the company he created to make them. About the Comptometer schools he set up to train the operators and place them in jobs. About the competitors and their machines, the business battles and the deals. News, feature articles and interviews with collectors, curators, restorers and archivists.
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