Computer science development of sophisticated computing equipment. Wilhelm Schickard designed and constructed the first working mechanical calculator in 1623. In 1673, Gottfried Leibniz demonstrated a digital mechanical calculator, called the Stepped Reckoner. He may be considered the first computer scientist and information theorist, for, among other reasons, documenting the binary number system. In 1820, Thomas de Colmar launched the mechanical calculator industry when he released his simplified arithmometer, which was the first calculating machine strong enough and reliable enough to be used daily in an office environment. Charles Babbage started the design of the first "automatic mechanical calculator", his Difference Engine, in
The Computer Museum, Boston Digital image processing The gallery included the history, technology and applications of digital image processing. Possibly the first-ever digital image was acquired from Jet Propulsion Labs, consisting of hand-assembled colored strips of line-printer output from the Mariner 4 Mars probe (1965). Static exhibits included a display of early computer graphic input and output devices, examples of digital typography, and a holographic animation of U.S. demographic evolution. Computer graphics Static exhibits included a display of early computer graphic input and output devices, examples of digital typography, the holographic animation "American Graph Fleeting" and "A Visualizer's Bestiary", a tableau of real-world objects