Epson 386/25 - Manual (Page 314)

RGB
Red Green Blue. A type of color monitor.
ROM
Read Only Memory. A portion of memory that can only be read
and cannot be used for temporary storage. ROM retains its
contents even when you turn off the power.
Root directory
RS-232C
A widely used, standard type of serial interface. You can easily
connect an RS-232C compatible device to the built-in port on
your computer.
Sector
A contiguous section of a disk track that provides an address at
which the computer can access data.
Self test
The initial diagnostics procedures a system performs to check its
hardware.
Serial
The type of interface that transmits data one bit at a time. See
Interface and Parallel.
16 Glossary