1990

The following Apple-related events occurred in 1990:
===January 1990===
*January 29: Michael Spindler becomes COO of Apple Computer.
===February 1990===
*February 19: Adobe Photoshop 1.0 is released for classic Mac OS by Adobe Systems.
===March 1990===
*March 19: The Macintosh IIfx is released along with System 6.0.5.
===April 1990===
===May 1990===
*May 7-11: The first Worldwide Developers Conference is held at the San Jose McEnery Convention Center in California.
*May 22: Windows 3.0 is released by Microsoft for PCs.
===June 1990===
===July 1990===
===August 1990===
===September 1990===
*September 19-22: Apple Expo 1990 is held in Puteaux, France.
===October 1990===
*October 15: The Macintosh Classic, LC, and IIsi are released, along with the Macintosh 12-inch RGB Display and System 6.0.7. The Macintosh Plus and SE are discontinued.
===November 1990===
*November: Michael Spindler becomes president of Apple Computer.
===December 1990===