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Dr. Douglas C Englebart conceptualized the first computer mouse. The first mouse built was based on his sketches.
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Bill English built the first working mouse prototype. It had a single button, a wheel at the bottom and a cord at the back. This was where it was first called the mouse when someone in Englebart's lab said it looked like one.
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Englebart filed a patent application for his mouse, which was listed as an “X-Y Position indicator for a
Display System.” -
Jean-Daniel Nicoud designed the mouse that we use today, with two buttons and a wheel.
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Microsoft developed the first mouse that better fitted the hand than it's more rectangular predecessors. It was known as the "Dove Bar" because of it's resemblance to a bar of soap. Many mice generally followed the Dove Bar's sleeker, contoured design after it's release.
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Logitech created the first wireless mouse, known as the Cordless MouseMan Optical. This gave way to many more of it's kind, varying in size and shape.
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The Logitech Nano cordless laser mouse was specifically made for notebooks and could clip onto a laptop for convenience. At this point, Laptops and computers were common in households and companies began thinking of ways to make mice stand out from the generic, two buttoned crowd.