Dell Latitude C610 - Manual (Page 165)

R
RAM - random-access memory
The primary temporary storage area for program instructions and data. Any information stored in RAM is lost
when you turn off your computer.
readme file - A text file included with a software package or hardware product. Typically, readme files
provide installation information and describe new product enhancements or corrections that have not yet
been documented.
read-only - Data and/or files you can view but cannot edit or delete. A file can have read-only status if:
It resides on a physically write-protected floppy disk.
It is located on a network in a directory and the system administrator has assigned read-only rights to
you.
refresh rate - The frequency, measured in Hz, at which your screen's horizontal lines are recharged
(sometimes also referred to as its vertical frequency). The higher the refresh rate, the less video flicker can
be seen by the human eye.
reserve battery - A battery that keeps your computer clock and certain circuitry working.
resolution - The sharpness and clarity of an image produced by a printer or displayed on a monitor. The
higher the resolution, the sharper the image.
RFI - radio frequency interference
Interference that is generated at typical radio frequencies, in the range of 10 kHz to 100,000 MHz. Radio
frequencies are at the lower end of the electromagnetic frequency spectrum and are more likely to have
interference than the higher frequency radiations such as infrared and light.
ROM - read-only memory
Memory that stores data and programs that cannot be deleted or written to by the computer. ROM, unlike
RAM, retains its contents even after you turn off your computer. Some programs essential to the operation
of your computer reside in ROM.
rpm - revolutions per minute