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1700: Pre-Steampunk? - The Staffelwalze, or Stepped Reckoner, a digital calculating machine invented by Gottfried Wilhelm Leibniz around 1672 and built around 1700. It was the first known calculator that could perform all four arithmetic operations; addition, subtraction, multiplication and division. 67 cm (26 inches) long. The cover plate of the rear section is off to show the wheels of the 16 digit accumulator. The Age Of Reason, Adding Machine, Mechanical Calculator, Electronics Wallpaper, Steampunk Gadgets, Computer Projects, Computer History, Industrial Photography, Flipped Classroom
The Age Of Reason
Adding Machine
Mechanical Calculator
Electronics Wallpaper
Steampunk Gadgets
Computer Projects
Computer History
Industrial Photography
Flipped Classroom

Full Size Picture Leibnitzrechenmaschine.jpg

1700: Pre-Steampunk? - The Staffelwalze, or Stepped Reckoner, a digital calculating machine invented by Gottfried Wilhelm Leibniz around 1672 and built around 1700. It was the first known calculator that could perform all four arithmetic operations; addition, subtraction, multiplication and division. 67 cm (26 inches) long. The cover plate of the rear section is off to show the wheels of the 16 digit accumulator.

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A popular mechanical calculator, capable of performing addition, and subtraction,, was developed by the great French philosopher and scientist Blaise Pascal in 1642. Description from computer4know.blogspot.com. I searched for this on bing.com/images History Of Computer, Old Calculator, Vintage Calculator, Mechanical Computer, Mechanical Calculator, Industrial Goth, Computer Education, Vintage Technology, Slide Rule
History Of Computer
Old Calculator
Vintage Calculator
Mechanical Computer
Mechanical Calculator
Industrial Goth
Computer Education
Vintage Technology
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History of computer

Introduction:- The computer is an essential tool of present day in society. Today computer gives us the information we need to extend our thinking power, with invention of new technology equipments our way of living has modify a lot of steps. We use computer in every field of life example- Business, research, Communication, Entertainment, banking, etc. The word computer comes from Greek word “compute” “which means to calculate”. Definition of computer:- A computer is an electronics machine…

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touchtone phone Old Calculator, Magic Tools, Mechanical Calculator, Button Machine, Retro Tech, Square Roots, Weird Cars, Tech Innovation, Electronics Design
Old Calculator
Magic Tools
Mechanical Calculator
Button Machine
Retro Tech
Square Roots
Weird Cars
Tech Innovation
Electronics Design

John E. Karlin, "Father of Human-Factors Engineering in American Industry," Passes Away - Core77

You may not know his name, but you know his work. John E. Karlin, who passed away in late January, essentially invented the touch-tone keypad. We take that ubiquitous input device for granted—it's on everything from cell phones to alarm systems to microwave ovens—but there was a time when that...

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