National Instruments Measurement Studio User Manual
Page 55
Glossary
© National Instruments Corporation
G-3
Measurement Studio User Manual
context-sensitive help
Help for dialog boxes, the controls in dialog boxes, and keywords in source
code that you can access with the <F1> key or a Help button, or by clicking
the link that appears in the Dynamic Help window in Visual Studio .NET.
control
1. ActiveX control. See
.
2. 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.
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.
cursor label
Text object used to display X and Y coordinates that a cursor crosshair
points to on a graph.
D
DAQ
Data acquisition. Process of acquiring data, typically from A/D or digital
input plug-in boards.
DAQ Assistant
A graphical interface for configuring measurement tasks, channels, and
scales.
DAQ device
A device that acquires or generates data and can contain multiple channels
and conversion devices. DAQ devices include plug-in devices, PCMCIA
cards, and DAQPad devices, which connect to a computer USB or 1394
(FireWire) port. SCXI modules are considered DAQ devices.
DataSocket
Technology that simplifies live data exchange between applications and
HTTP, FTP, OPC, logos (Lookout objects) and file servers over the Internet.
It provides one common API to a number of different communication
protocols.
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. See also DAQ
device and measurement device.
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.