Apple Desktop Bus. A low-speed serial bus that connects input hardware devices to Macintosh computers and other equipment.
(Apple Desktop Bus) Hardware and software specification which defines communications between Macintosh desktop peripherals, like mice and keyboards. ADB will soon be completely replaced by the new Universal Serial Bus (USB).
The ADB or Apple Desktop Bus was a serial bus used by Apple computer to drive the mouse and keyboard interfaces. The cable consisted of one data line [ADB], a power line [+5v] and a ground line. The maximum data rate was 125kbps, actual bus speed was much lower. The ADB bus was rendered obsolete by the introduction of the Firewire interface on Apple Computer products.
Apple Desktop Bus. The Macintosh plug-in port where the keyboard, mouse, trackball, graphics tablet, etc. are connected.
Apple Desktop Bus. The Mac OS communications port that is used for keyboards, mice, trackballs, graphics tablets, joysticks, and other input devices.