What is "epoc"

EPOC may be:

• Excess post-exercise oxygen consumption
• Emotiv EPOC, consumer brain–computer interface devices for PC.
• EPOC (operating system), the precursor OS to the Symbian operating system
• Efficient Probabilistic Public-Key Encryption Scheme
• The Electric Power Optimization Centre
• EPoC - Ethernet passive optical network (EPON) Protocol over Coax

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EPOC is a discontinued family of graphical operating systems developed by Psion for portable devices, primarily PDAs. EPOC came from epoch, the beginning of an era, but was backfitted by the engineers to "Electronic Piece Of Cheese". It was succeeded by Symbian in 1998.