N.T.S.C. (National
Television Standards
Committee. See EIA) |
Colour TV system used in the USA. |
N/D (Neutral
Density) |
A filter that attenuates light equally over the whole visible spectrum. |
| Nano |
Order of magnitude; 10 –9 |
| Native |
The raw memory capacity of a given media. The memory capacity of tapes is often specified including the tape drives 2:1 compression capabilities. i.e. a 12Gb native tape will be specified as 24Gb etc. Digital hard disk recorders cannot use the tape drives 2:1 compression capabilities. |
| Network |
A series of points connected by communications channels. |
NIC (Network
Interface Card) |
Board that provides network communication capabilities to and from a computer system. Also called an adaptor. |
| Noise |
Unwanted signals present on data lines. |
| Null Modern |
A device that connects two DTEs directly by emulating the physical connections of a DCE. |
