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Glossary
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National Instruments Corporation G-3 NI-IMAQ User Manual
black reference level the level that represents the darkest an image can get. See also white
reference level.
buffer temporary storage for acquired data
bus the group of conductors that interconnect individual circuitry in a
computer, such as the PCI bus; typically the expansion vehicle to
which I/O or other devices are connected
C
C Celsius
cache high-speed processor memory that buffers commonly used instructions or
data to increase processing throughput
CCIR Comite Consultatif International des Radiocommunications—a committee
that developed standards for color video signals
chrominance the color information in a video signal
CMOS complementary metal-oxide semiconductor
compiler a software utility that converts a source program in a high-level
programming language, such as Basic, C or Pascal, into an object or
compiled program in machine language. Compiled programs run 10 to
1,000 times faster than interpreted programs. See also Interpreter.
conversion device device that transforms a signal from one form to another; for
example, analog-to-digital converters (ADCs) for analog input
and digital-to-analog converters (DACs) for analog output
CPU central processing unit
CSYNC composite sync signal; a combination of the horizontal and vertical
sync pulses
CSYNCIN composite sync in signal
CSYNCOUT composite sync out signal
UM.book Page 3 Monday, July 13, 1998 9:49 AM