National Instruments 374318A-01 用户手册
Glossary
G-2
ni.com
coercion
Automatic conversion that Measurement Studio controls perform to change
the numeric representation of a data element.
the numeric representation of a data element.
complex graph
A control that displays a
ComplexDouble
data type; the
ComplexDouble
data type represents a complex number of type
Double
that is composed of
a real part and an imaginary part.
context-sensitive help
Help for dialog boxes, the controls in dialog boxes, and keywords in source
code that you can access with the key or a Help button, or by clicking the
link that appears in the Dynamic Help window in Visual Studio.
code that you can access with the key or a Help button, or by clicking the
link that appears in the Dynamic Help window in Visual Studio.
control
Object for entering, displaying, or manipulating data on a user interface.
counter/timer I/O
Reading or writing data based on high-precision timing through a counter
or timer. By combining a counter with a highly accurate clock, you can
create a wide variety of timing and counting applications, such as
monitoring and analyzing digital waveforms and generating complex
square waves.
or timer. By combining a counter with a highly accurate clock, you can
create a wide variety of timing and counting applications, such as
monitoring and analyzing digital waveforms and generating complex
square waves.
cursor
Flashing rectangle that shows where you may enter text on the screen. If
you have a mouse installed, there is a rectangular mouse cursor, or pointer.
you have a mouse installed, there is a rectangular mouse cursor, or pointer.
cursor label
Text object used to display X and Y coordinates that a cursor crosshair
points to on a graph.
points to on a graph.
D
DAQ
Data acquisition. Process of acquiring data, typically from A/D or digital
input plug-in boards.
input plug-in boards.
DAQ device
A device that acquires or generates data and can contain multiple channels
and conversion devices. DAQ devices include plug-in devices which
connect to a computer USB port or PCI bus.
and conversion devices. DAQ devices include plug-in devices which
connect to a computer USB port or PCI bus.
device
An instrument or controller you can access as a single entity that controls
or monitors real-world I/O points. A device is often connected to a host
computer through some type of communication network.
or monitors real-world I/O points. A device is often connected to a host
computer through some type of communication network.
digital I/O
Reading or writing digital representations of data in discrete units (the
binary digits 1 and 0). Digital information is either on or off.
binary digits 1 and 0). Digital information is either on or off.
digital waveform graph
A control that displays
DigitalWaveform
data on a Windows Forms or
Web Forms user interface; the
DigitalWaveform
data type represents a
set of digital states that are grouped by samples or signals.