Glossary
NI2590/2591 User Man ual G-2 ni.com
B
breakpoint asp ecifiedpoint in program code where the program pauses to perform
some action; a breakpoint interrupt can be added to a scan list for
debuggingor other special needs.
bus thegroup of conductors that interconnect individual circuitry in a computer.
Typically,a bus is the expansion vehicle to which I/O or other devices are
connected. Examples of PC buses a re the ISA and PCI bus.
C
CCelsius
channel pin or wire lead on the multiplexer to which you apply or from which you
read the signal
common ach annel that is typically the output of a switch module
contact bounce the intermittent switching that occurs when the movable metal parts of a
relaymake or breakcontact
D
DC directcurrent
debounced indicateswhen the contact bounce has ended. See contact bounce.
device ap lug-in module,b oard, orp ad that can contain multiple channels and
conversiondevices. Some exa mples of devices are c omputers,
multimeters, multiplexers, oscillators, operator interfaces, and
counters.
diode an electronic component that acts primarily as a one-way valve
drivers/driversoftware softwarethat controls a specific hardware device such as a switch module
E
externaltrigger a voltage pulse from an external source that triggers an event such as
A/D conversion