One of the most recognized logos in the modern world and certainly the most recognized logo in the tech industry has recently undergone a pretty major over haul. It is the Microsoft Windows logo. In a huge marketing campaign, Microsoft has re-branded many of its products to a newer, flatter logo that matches the style of the new Windows 8 operating System.
The same basic elements of the old logo still exist and have almost always included the red, green, blue, and yellow shapes that abstractly represent a real window (this is known as skeumorphism in design terms). Much like its biggest competitor, Apple, the two companies have always taken a more literal approach with their logos and have chosen to represent their brands with real objects rather than an abstract concept which has become more popular today in the tech industry. More