Electrical Engineering Abbreviations
"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M",
"N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"

'Na' to 'Ng', 'Ni' to 'Nz'

n - nano (10-9), refractive index
NO - spectral noise density, sea level refractivity
NA - numerical aperture
NAK - negative-acknowledge character [ASCII Characters]
NAN - niche area network
NAS - Network Attached Storage
NASA - National Aeronautics and Space Administration
NATA - North American Telecommunications Association
NAVSTAR - Navigational Satellite Timing
NBFM - narrow-band frequency modulation
NBH - network busy hour
NBRVF - Narrow-band radio voice frequency
NBS - National Bureau of Standards [now NIST]
NBSV - narrow-band secure voice
NBT - No Bus Turn-around
NC - Not Connected [pin], Normally Closed [switch]
NCA - National Command Authorities
NCC - National Coordinating Center for Telecommunications
NCQ - Native Command Queuing
NCS - National Communications System, net control station
NCSC - National Communications Security Committee
NDCS - network data control system
NDI - Non-developmental Item
NEC - National Electric Code
NEMA - National Electrical Manufacturers Association
NEP - noise equivalent power
NES - noise equivalent signal
NEXT - Near-End Crosstalk
NF - Noise Figure
NFC - Near Field Communication
NFPA - National Fire Protection Association
NFS - Network File System
NGM - Next Generation Memory

PC motherboard

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