One of the most recognizable logos ever created, the Apple logo has undergone some changes since its first variation.  The first Apple logo was created by Ronald Wayne.  The logo went from a highly detailed and somewhat old fashioned design to the far more simplified version which is more familiar to you and I.  This new and colorful logo was created by Rob Janoff and the bands of color were meant to represent the use of colors in information technology.  Finally the logo was altered to the variation that we see nowadays.  The logo has gone through a few changes but with the exception of the first logo, the design has remained fairly consistent.  I like that the new design has a slight 3D look to it, and while I am usually a fan of things that are very colorful, I actually like the more monochromatic variation.

Information from  http://famouslogos.net/apple-logo/