Made in 1975 and introduced April 1, 1982.
Introduced May 1, 1980.
1987–2012, 1987–present (secondary)Edit
Microsoft launched its most well-known logo on January 5, 1987, and since then, has been cherished by many. It was dropped on August 22, 2012, but it's still used on older products and some portals. It was created by Scott Baker.
"The new logo, in Helvetica italic typeface, has a slash between the o and s to emphasize the "soft" part of the name and convey motion and speed." - Scott Baker
With the launch of the new slogan in 2011, the Microsoft logo was altered slightly, reducing the slant.
1995 (ads), 2012-presentEdit
On August 23, 2012, Microsoft's most notable logo was retired - and a new logo was commissioned. The new logo also includes four squares with the colors of the then-current Windows logo. This logo is, however, not completely new - it was featured in Windows 95 commercials from 1995.