In 1981, Xerox revolutionized computing with the introduction of the mouse. Apple took it a step further when it began shipping mice with its Macintosh computers, making it the first commercially successful computer with a mouse. Until then, user input had been primarily a function of the keyboard. More than 25 years later, mice have become a ubiquitous part of the computing experience. Replacing a PC mouse is really a two-step process.
