Z80 Card – A circuit board containing a Z80 microprocessor. An Apple IIgs equipped with a Z80 card can run programs based on the popular CP/M operating system.

Zip Disks – and other super floppies High-density removable disks that store 100, 200, or more megabytes of data. The computer industry has adopted these disks and their associated drives in place of the older floppy disk media. Zip is a registered trademark of Iomega Corporation.

Zone – A logical grouping of devices in an AppleTalk internet that makes it easier for users to locate network services.