Epson 4000 - Manual (Page 139)

Refresh rate
The frequency with which a monitor can redraw a screen
image. The faster the refresh rate, the less the screen will flicker.
Reset
To restart a computer without turning it off. You can reset your
computer by pressing Ctrl Alt Del. Resetting erases all data
stored in RAM and reloads your operating system.
ROM
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.
Roof 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 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.
Glossary 7