# What could the Thomas machine do?

## What could the Thomas machine do?

Machines that could do arithmetic automatically were built as mechanical marvels in the 1600s on the design of mathematicians such as Blaise Pascal and Gottfried Leibniz. Hence in this early machine, Thomas attempted direct multiplication by a single digit.

Who developed Thomas Arithmometer?

Charles Xavier Thomas
Frank Stephen Baldwin
Arithmometer/Inventors

### What is Pascaline computer?

Pascaline, also called Arithmetic Machine, the first calculator or adding machine to be produced in any quantity and actually used. It could only do addition and subtraction, with numbers being entered by manipulating its dials.

What were the main features of arithmometer?

The computing engine of an arithmometer has a set of linked Leibniz wheels coupled to a crank handle. Each turn of the crank handle rotates all the Leibniz wheels by one full turn. The input sliders move counting wheels up and down the Leibniz wheels, which are themselves linked by a carry mechanism.

## How did the arithmometer change the world?

Its production debut of 1851 launched the mechanical calculator industry which ultimately built millions of machines well into the 1970s. For forty years, from 1851 to 1890, the arithmometer was the only type of mechanical calculator in commercial production, and it was sold all over the world.

Why we use the Pascaline?

Answer: The Pascaline was designed and built by the French mathematician-philosopher Blaise Pascal between 1642 and 1644. It was used only for addition and subtraction of numbers by manipulating digits.

### How does the comptometer work?

The comptometer received its first patent and was put on the market in 1887. There were a set of digit keys 1-9 for each position , there were no zero keys. Pressing a number would change the display from 0 to the number pressed. Numbers were added as each digit key was pressed .

What is the purpose of a comptometer?

To serve as an adding or calculating machine
Comptometer/Purpose

## Why was the Arithmometer invented in the first place?

Because of its reliability and accuracy, government offices, banks, observatories and businesses all over the world started using the arithmometer in their day-to-day operations. Around 1872, for the first time in calculating machine history, the total number of machines manufactured passed the 1,000 mark.

When did Burroughs make the first arithmometer machine?

Burroughs corporation started as the American Arithmometer Company in 1886. By the 1920s it had become a generic name for any machine based on its design with about twenty independent companies manufacturing Thomas’ clones like Burkhardt, Layton, Saxonia, Gräber, Peerless, Mercedes-Euklid, XxX, Archimedes, etc.

### How is a multiplicand added to an arithmometer?

The arithmometers of this period were four-operation machines; a multiplicand inscribed on the input sliders could be multiplied by a single-digit multiplier by simply pulling on a ribbon (quickly replaced by a crank handle). It was a complicated design and very few machines were built.

How are the teeth of an arithmometer transferred?

This transfer operation, basic to all the arithmometer’s workings, is accomplished using the celebrated stepped cylinders first introduced by Leibniz. Each cylinder carries 9 teeth whose length increases stepwise (fig. 2: A).