"Windows is so ubiquitous that we often take it for granted. It's the operating system used on nearly 95 percent of all the desktops and notebooks sold worldwide, relegating other OSs to niche players. But that wasn't always the case. Indeed, when Windows first shipped, 20 years ago this month, it was considered nothing more than a slow operating environment that had arrived late to the party, well behind the industry leaders, Apple and Xerox PARC. Windows had a lot of growing up to do."
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