The evolution of Computers starts with the inventions of Mechanical
Calculators and Electronic Calculators. Only from the Inventions of Mechanical
and Electronic Calculators, we came to know that Mechanics, and Electronics can
also be used to do calculation works other than muscle works done by
humans.
These
Calculators are the basic and fundamental seed for our modern computers. In
that way first we need to know about some basic
The
pascaline works on the basis of gear mechanism. Only Natural numbers are used
in pascaline. Only Addition, Subtraction could be done using this calculator.
It is the first idea that is based on a mechanical calculation.
A rotating wheel with 10 spokes is attached with a continuous of wheels. It is arranged in such a way that when a wheel rotates one full rotation, a spoke in the neighbourhood that is left to the corresponding wheel will turn up to one spoke.
To do addition, we will just put the desired value by rotating the wheel spokes to desired values. The 10 spokes in a wheel serves as the 10 digits in number system. The number of wheels represents the number of decimal places in a number.
The wheel can be rotated only in one direction. There will be two lines to represent the initial values of decimal values that is value 1, 2. So that we can understand how to rotate the wheel to get other values. Mostly the wheels are used to rotate clock wise direction.
I think this link will help you more to understand about Pascaline,
http://www.youtube.com/watch?v=3h71HAJWnVU
It is the first idea that is based on a mechanical calculation.
A rotating wheel with 10 spokes is attached with a continuous of wheels. It is arranged in such a way that when a wheel rotates one full rotation, a spoke in the neighbourhood that is left to the corresponding wheel will turn up to one spoke.
To do addition, we will just put the desired value by rotating the wheel spokes to desired values. The 10 spokes in a wheel serves as the 10 digits in number system. The number of wheels represents the number of decimal places in a number.
The wheel can be rotated only in one direction. There will be two lines to represent the initial values of decimal values that is value 1, 2. So that we can understand how to rotate the wheel to get other values. Mostly the wheels are used to rotate clock wise direction.
I think this link will help you more to understand about Pascaline,
http://www.youtube.com/watch?v=3h71HAJWnVU
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