National Instruments Image Acquisition Software User Manual
Page 60
Glossary
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National Instruments Corporation
G-9
memory buffer
See buffer.
memory window
continuous blocks of memory that can be accessed quickly by changing
addresses on the local processor
MSB
most significant bit
MTBF
mean time between failure
mux
multiplexer—a switching device with multiple inputs that selectively
connects one of its inputs to its output
N
NI-IMAQ
driver software for National Instruments IMAQ hardware
noninterlaced
a video frame where all the lines are scanned sequentially, instead of
divided into two frames as in an interlaced video frame
NTSC
National Television Standards Committee—the committee that developed
the color video standard used primarily in North America, which uses
525 lines per frame. See also PAL.
NVRAM
nonvolatile RAM—RAM that is not erased when a device loses power or is
turned off
O
operating system
base-level software that controls a computer, runs programs, interacts with
users, and communicates with installed hardware or peripheral devices
P
PAL
Phase Alternation Line—one of the European video color standards; uses
625 lines per frame. See also NTSC.
PCI
Peripheral Component Interconnect—a high-performance expansion bus
architecture originally developed by Intel to replace ISA and EISA; it is
achieving widespread acceptance as a standard for PCs and workstations
and offers a theoretical maximum transfer rate of 132 Mbytes/s
PCLK
pixel clock signal—times the sampling of pixels on a video line
UM.book Page 9 Monday, July 13, 1998 9:49 AM