National Instruments DAQPad-6508 User Manual page 81

Glossary
PCMCIA
PFI
photoelectric sensor
pipeline
PLC
Plug and Play devices
Plug and Play ISA
PnP
port
posttriggering
potentiometer
PPI
ppm
pretriggering
DAQPad-6507/6508 User Manual
an expansion bus architecture that has found widespread acceptance as a de
facto standard in notebook-size computers. It originated as a specification
for add-on memory cards written by the Personal Computer Memory Card
International Association.
Programmable Function Input
an electrical device that responds to a change in the intensity of the light
falling upon it
a high-performance processor structure in which the completion of an
instruction is broken into its elements so that several elements can be
processed simultaneously from different instructions
programmable logic controller—a highly reliable special-purpose
computer used in industrial monitoring and control applications. PLCs
typically have proprietary programming and networking protocols, and
special-purpose digital and analog I/O ports.
devices that do not require DIP switches or jumpers to configure resources
on the devices—also called switchless devices
a specification prepared by Microsoft, Intel, and other PC-related
companies that will result in PCs with plug-in boards that can be fully
configured in software, without jumpers or switches on the boards
Plug and Play
(1) a communications connection on a computer or a remote controller (2)
a digital port, consisting of four or eight lines of digital input and/or output
the technique used on a DAQ board to acquire a programmed number of
samples after trigger conditions are met
an electrical device the resistance of which can be manually adjusted; used
for manual adjustment of electrical circuits and as a transducer for linear or
rotary position
programmable peripheral interface
parts per million
the technique used on a DAQ board to keep a continuous buffer filled with
data, so that when the trigger conditions are met, the sample includes the
data leading up to the trigger condition
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