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Glossary
N
NI-DAQ
National Instruments driver software for DAQ hardware.
NI-DAQmx
The latest NI-DAQ driver with new VIs, functions, and development tools
for controlling measurement devices.
NPN transistor
A two-junction (bipolar) semiconductor transistor with an N-type (negative
ion) collector and emitter and a P-type (positive ion) base. An NPN
transistor is created by adding a thin layer of P-type semiconductor material
between two regions of N-type material.
NRSE
Nonreferenced single ended mode—all measurements are made with
respect to a common (NRSE) measurement system reference, but the
voltage at this reference can vary with respect to the measurement system
ground.
O
op-amp
Operational amplifier—pre-built amplifier modules that are general
enough to be used almost anywhere an amplifier is needed.
P
PCB
Printed circuit board.
PCI
Peripheral Component Interconnect—a high-performance expansion bus
architecture originally developed by Intel to replace ISA and EISA. It is
achieving widespread acceptance as a standard for PCs and workstations;
it offers a theoretical maximum transfer rate of 132 Mbytes/s.
peak-to-peak
A measure of signal amplitude; the difference between the highest and
lowest excursions of the signal.
PFI
Programmable function input.
PN
The simplest semiconductor structure. It consists of a positive or P-region
(containing positive ions) in junction with a negative or N-region
(containing negative electrons).
© National Instruments Corporation
Glossary-7
NI ELVIS User Manual