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mV

Abbreviation for millivolt(s).

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NIC

Abbreviation for network interface controller.

NMI

Abbreviation for nonmaskable interrupt. A device sends an NMI to signal the microprocessor about hardware errors such as a parity error.

numbers lock mode

When you press on the keyboard, the numbers lock mode indicator comes on and the number keypad functions as a 10-key number pad. To exit the numbers

lock mode, press again and the indicator turns off.

ns

Abbreviation for nanosecond(s), one billionth of a second.

NTFS

Abbreviation for the NT File System option in the Windows NT operating system.

NTSC

Abbreviation for National Television Standards Committee. The governing body that dictates broadcast and consumer video guidelines and values. It ensures that all broadcast,

video, and television products in the United States adhere to the NTSC Interface Scan System. NTSC is not compatible with PAL.

NVRAM

Abbreviation for nonvolatile random-access memory. Memory that does not lose its contents when you turn off your computer. NVRAM is used for maintaining the date, time,

and system configuration information.

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online access service

A service that typically provides access to the Internet, e-mail, bulletin boards, chat rooms, and file libraries.

OTP

Abbreviation for one-time programmable.

OpenGL

An environment for developing portable, interactive 2D and 3D graphics applications.

oz

Abbreviation for ounce.

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PAL

Abbreviation for phase alternating line, a standard for television in many European countries. PAL is not compatible with NTSC, and is not marketed, sold, or serviced in the

United States.

parallel port

An I/O port used most often to connect a parallel printer to your computer. You can usually identify a parallel port on your computer by its 25-hole connector.

parameter

A value or option that you specify to a program.

partition