EDO: Extended Data Output; an older type of computer memory module that’s used on only old Pentium motherboards.

EIDE: Enhanced Integrated Drive Electronics; a type of hard drive.

ergonomics: Adapting work or working conditions to suit the worker.

Error Checking: A Windows tool that can examine a hard drive and fix many common drive errors.

Ethernet: The standards and protocols used by Windows for networking.

expansion card: A circuitry board that you can add to a computer internally to expand that computer’s capabilities.

expansion slot: A slot on a computer’s motherboard available for adding expansion cards, which add new components to the PC.