Editing Apple Trackball (section)

== Historical Context ==

The introduction of [[Apple Desktop Bus]] in 1986 with the Apple IIGS and Macintosh SE created a standardized interface for input devices. This prompted peripheral manufacturers to develop alternatives to the traditional mouse, particularly for users requiring greater precision or those with repetitive strain injuries. Trackballs offered stationary operation ideal for cramped workspaces and reduced arm movement for users with mobility limitations.

The first ADB trackballs appeared in 1987, initially as rebranded or modified versions of existing serial devices. By 1988, purpose-built ADB trackballs emerged with features specifically targeting Macintosh users, including multiple buttons programmable through software and high-resolution tracking mechanisms. The market peaked in the mid-1990s before declining with the transition to USB in 1998-1999.