RS-232-C standard
An accepted industry standard for serial communication connections. Recommended Standard (RS).

Safe Mode
A method of starting Windows using basic files and drivers only, without networking. Safe Mode is available by pressing the F8 key when prompted during startup. This allows you to start your computer when a problem prevents it from starting normally.

screen resolution
The setting that determines the amount of information that appears on your screen, measured in pixels. Low resolution, such as 640 x 480, makes items on the screen appear large, although the screen area is small. High resolution, such as 1024 x 768, makes the overall screen area large, although individual items appear small.

screen saver
A moving picture or pattern that appears on your screen when you have not used the mouse or keyboard for a specified period of time.

sector
A 512-byte unit of physical storage on a hard disk. Windows file systems allocate storage in clusters, where a cluster is one or more contiguous sectors.