National Instruments none D

Glossary

coercion Automatic conversion that Measurement Studio controls perform to change

the numeric representation of a data element.

COM Component Object Model. Microsoft specification for architecting and

developing reusable software components.

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.

control 1. ActiveX control. See ActiveX control.

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.

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.