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Comptometer Operator's Certificate Test. This document (transcribed below) is a final Certificate Test from a Felt & Tarrant operator training school. It was contributed by Mrs Noelle Mackay, who worked as a Comptometrist for the Felt & Tarrant agents (Peacock Bros) in Melbourne, Australia, during the 1960s. After learning
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Instructions for basic arithmetic operations with a "Comptometer" type calculator. This is a new article and was not in "The International Calculator Collector". These instructions for performing the basic 4-functions on a "Comptometer" type calculator are taken from the operating instructions of the Sumlock machine
6 Jun 2009 My collegue, a trained comptometrist, demonstrated the arithmetic operation manuevers; which to me seems to require great manual dexterity to crunch numbers with speed this way. I recorded it and have it here to share with you. In regards to calculator technology, we have really come a long way.
Comptometer operators were taught to use their machine in the same way that typewriters , computer keyboards can be operated using thetouch typing" technique. Easytrim 23 manual dexterity. The Bell Punch Company PLUS, the decimal point A 9 columnFigureFlow" manual comptometer in a, Anita Contents The Bell
The aim of the Comptometer Course is to give each student planning to enter business a marketable skill in the performance of a fundamental office task. Comptometer oper- ating is a profession which is unequalled in opportunities for advancement. Because a Comptometer operator is so close to the pulse of business,
The comptometer was the first commercially successful key-driven mechanical calculator, patented in the United States by Dorr E. Felt in 1887. A key-driven calculator is extremely fast because each key adds or subtracts its value to the accumulator as soon as it is pressed and a skilled operator can enter all of the digits of a
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