Computer mouse (manipulator)
December 9 is the birthday of a computer mouse. It was on this day that American inventor Douglas Engelbart of Stanford demonstrated the world's first computer mouse at a computing conference in San Francisco.
This invention was a one-button wooden wheelie cube. The device owes its name to a wire - it reminded the inventor of the tail of a real mouse.
The first mouse was assembled by engineer Bill English, and programs to demonstrate capabilities were written by Jeff Rulifson. Inside the device were two metal discs: one turned when the device was moving forward, the second was responsible for moving the mouse to the right and left.
Later, Xerox became interested in Engelbart's idea. Her researchers changed the design of the mouse, and it became similar to the modern one. In the early 1970s, Xerox first introduced the mouse as part of a personal computer. It had three buttons, instead of discs, a ball and rollers, and cost $400.
In 1983, Apple released its own model of a one-button mouse for the Lisa computer, the cost of which was reduced to $25. The mouse gained wide popularity due to its use in Apple Macintosh computers and later in Windows for IBM PC.
Today, there are several types of computer mice: mechanical, optical, laser. And they, in turn, are divided into wired and Bluetooth.
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