Glossary
IMAQ PCI-1428 User Manual G-6 ni.com
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.
NVRAM Nonvolatile RAM. RAM that is not erased when a device loses power or is
turned off.
O
operating s ystem Base-level software that controls a computer, runs programs, interacts with
users, and communicates with installed hardware or peripheral devices.
P
PCI Peripheral Component Interconnect. A high-performance expansion bus
architecture originally developed by Intel to replace ISA and EISA. PCI
offers a theoretical maximum transfer rate of 132 Mbytes/s.
pixel Picture element. The smallest division that makes up the video scan line;
for display on a computer monitor, a pixel’s optimum dimension is square
(aspect ratio of 1:1, or the width equal to the height).
pixel clock Divides the incoming horizontal video line into pixels.
pixel count The total number of pixels between two horizontal synchronization signals.
The pixel count determines the frequency of the pixel clock.
protocol The exact sequence of bits, characters, and control codes used to transfer
data between computers and peripherals through a communications
channel.
pts Points.