Appletalk is a Communication protocol of Apple. It is employed by the computers Macintosh since 1984, initially as an integral part of the network Localtalk then as an autonomous protocol (layers 3 to 5), generally within screens Ethernet, the unit being baptized Ethertalk.

Always used, it is replaced more and more by the protocol TCP/IP, grace in particular to technology Hello.

Simple: Appletalk