File:Macintosh prototype wirewrap board 5 bottom.jpg

The bottom of the 5th of 6 Macintosh prototype logic boards engineered by Burrell Smith of Apple Computer between 1980 and 1983. The bottom side had been wire-wrapped by several members of the Macintosh development team in visibly different styles. This specimen was the first to be set up for operation with keyboard, display, mouse and disk drives (see top). On loan to the Digibarn Computer Museum by Dan Kottke, who had hand assembled the first clear Macintosh prototype.

Source

 * Macintosh Wire Wrap Logic Board #5 1980-1983, Digibarn Computer Museum. 2004.