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Glossary
© National Instruments Corporation G-5 NI 5620 User Manual
input bias current the current that flows into the inputs of a circuit
input impedance the measured resistance and capacitance between the input terminals of a
circuit
instrument driver a set of high-level software functions that controls a specific plug-in DAQ
board. Instrument drivers are available in several forms, ranging from a
function callable language to a virtual instrument (VI) in LabVIEW.
interrupt a computer signal indicating that the CPU should suspend its current task
to service a designated activity
interrupt level the relative priority at which a device can interrupt
ISA industry standard architecture
L
LabVIEW a graphical programming language
LSB least significant bit
M
m meters
M (1) Mega, the standard metric prefix for 1 million or 10
6
,whenusedwith
units of measure such as volts and hertz; (2) mega, the prefix for 1,048,576,
or 2
20
, when used with B to quantify data or computer memory
MB megabytes of memory
MITE MXI Interface to Everything—a custom ASIC designed by NI that
implements the PCI bus interface. The MITE supports bus mastering for
high-speed data transfers over the PCI bus.
multiple-record
acquisition
multiple, distinct chunks (or records) of data