EPOC is the general name of a family of
operating systems for
personal digital assistants (PDAs), produced first by
Psion and now developed by a spin-off,
Symbian. The name EPOC, claimed to stand for Electronic Piece Of Cheese, is deprecated, and the name
Symbian OS is preferred.
EPOC seems to be the most popular PDA operating system in Europe, mainly for its good abilities to handle mobile communication.