Glossary
National Instruments Corporation G-9 VXI-MIO Series User Manual
set the input range and polarity, while you can program them for
other boards. Most boards have programmable gains.
instrument driver A set of high-level software functions that controls a specific VXI
or RS-232 programmable instrument or a specific plug-in DAQ
board.
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.
interval scanning Scanning method where there is a longer interval between scans
than there is between individual channels comprising a scan.
I/O input/output—The transfer of data to/from a computer system
involving communications channels, operator interface devices,
and/or data acquisition and control interfaces.
I
OH
current, output high
I
OL
current, output low
ISA Industry Standard Architecture
K
KB kilobytes—1,024 bytes when referring to memory
kS 1,000 samples
L
LabVIEW Laboratory Virtual Instrument Engineering Workbench
LASTCHAN last channel (bit)
LED light-emitting diode
logical address An 8-bit number that uniquely identifies each VXIbus device in a
system. It defines the A16 register addresses of a device, and
indicates Commander and Servant relationships.
LSB least significant bit