N

N               Negative Flag. A processor status flag that indicates a
                negative result.
NAC             Network Adapter Card.
NACS            Netware Asynchronous Communications Server.
NAIL!           Not Another Implementation of Logic!. The NAIL! project was
                started at Stanford in 1985. The initial goal was to study
                the optimization of logic by using the database-oriented
                "all-solutions" model.
NAK             Negative AcKnowledgement.
NAN             Not A Number. In the IEEE floating-point standard, refers to
                indefinite numbers (numbers that would result from dividing 0
                by 0).
NAU             Network Addressable Unit. An LU or a PU is addressed through
                a logical entity assigned a unique network address called the
                NAU.
Navstar GPS     NAVigation System with Timing And Ranging Global Positioning 
                System.
NBS             National Bureau of Standards.
NC              Numeric Control.
NCB             Network Control Block. A Network Control Block used to pass
                requests to NetBIOS and receive status information from the
                NetBIOS handler.
NCIA            Native Client Interface Architecture.
NCP             Netware Core Protocol. NCP is from Novell.
NCP             Network Control Protocol. See ACF/NCP.
NCS             Network Computing System.
NDI             Network Driver Interface. See NDIS.
NDIS            Network Driver Interface Specification. A hardware-
                independent network interface developed by Microsoft and 3com.
                See also TCP/IP.
NDL             Network Definition Language.
NDS             Netware Directory Service.
NDS             Netware Domain Service.
NEC SX          A pipelined vector processor by NEC.
NEST            Novell Embedded Systems Technology.
NETBEUI         NETbios Extended User Interface.
NETBIOS         NETwork Basic Input Output System. The NETBIOS was introduced
                at the same time IBM announced the PC Network in 1984.
                NETBIOS, now distributed as a memory resident program, is a
                complete replacement for the original ROM versions.
NFS             Network File System. NFS is from Sun Microsystems.
NIC             Network Interface Card.
NIM             Network Install Manager.
NiMH            Nickel-Metal Hybride.
NIP             New Information Paradigms.
NIST		National Institute of Standards and Technology.
NIU		Network Interface Unit.
NL              New-Line character.
NLM             Netware Loadable Module.
NLSP            Netware Link Services Protocol.
NMF             Network Management Forum.
NMI             Non-Maskable Interrupt. An interrupt which can not be
                disabled by clearing the CPU's interrupt enable flag, unlike
                most normal interrupts.  Non-maskable interrupts are
                typically used to signal calamities which require immediate
                action, such as a hardware failure or imminent loss of power.
NMOS            N-channel Metal-Oxide Semiconductor.
NMP             Name Management Protocol.
NMS             Network Management System.
NMT             Network ManagemenT. NMT is conceptual control element of a 
                station, which interfaces with all the layers of the station 
                and is responsible for the setting and resetting of control
                parameters, obtaining reports of error conditions, and 
                determining whether a station is connected to or disconnected
                from the medium.
NNTP            Network News Transport Protocol.
NOMS            Network Operations Management System.
NOPAC           Network On-line Public Access Control.
NORMA           NO Remote Access Memory.
NOS             Network Operating System. A NOS is the software necessary to
                integrate the many components of a network into a single 
                system to which an end-user may have access.
NREN            National Research and Education Network. 
NRM             Normal Response Mode.
NRZ             Non-Return to Zero. A simple technique to generate a digital
                signal 0 or 1.
NRZI            Non-Return to Zero Inverted.
NS              Network Service.
NSA		National Security Agency.
NSAP            Network Service Access Point.
NSCA            National Center for Supercomputing Applications.
NSDU            Network Service Data Unit.
NSF             National Science Foundation.
NSP             Native Signal Processing.
NSTL            National Software Testing Laboratories.
NT-1            Network Terminator.
NTFS            NaTive File System.
NTMS            National Traffic Management System.
NTSC            National Television System Committee.
NUL             NULl character.
NUMA            NonUniform Memory Access.
NURBS           NonUniform Rational B-Spline.
NVRAM           Non-Volatile RAM. Memory which can be modified like normal
                RAM but does not lose its contents when the system's power is
                turned off. This memory may be powered by a battery when the
                system power if off, or it may be a type of memory which does
                not need electricity to maintain its contents, such as EEPROM
                or bubble memory.


