Epson Endeavor 468C - Manual (Page 177)

R O M
Read Only Memory. Memory that can only be read and cannot
be modified. ROM retains its contents even when you turn off
the computer by using power from a backup battery.
Root directory
The main directory in a hierarchical disk directory structure.
All other directories are subdirectories of the root directory.
RS-232C
A standard type of serial communication. You can connect an
RS-232C device to either of the computer’s RS-232C serial ports.
Serial
The type of communication that transmits data from a serial
interface to a serial device over a single wire. See also Interface
and Parallel.
Shadow RAM
The feature in your computer that copies the contents of the
system, video, and external BIOS ROMs into the RAM area of
memory to speed up processing.
SIMM
See Memo ry module.
Subdirectory
In a hierarchical disk directory structure, a group of files in a
directory within another directory or the root directory.
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