Glossary
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National Instruments Corporation
G-3
FPGA
Field-Programmable Gate Array—fundamentally, an FPGA is a
semi-conductor device that contains a large quantity of gates (logic
devices), which are not interconnected, and whose function is determined
by a wiring list, which is downloaded to the FPGA. The wiring list
determines how the gates are interconnected, and this interconnection is
performed dynamically by turning semiconductor switches on or off to
enable the different connections.
G
g
RMS
a measure of random vibration—the root mean square of acceleration levels
in a random vibration test profile
GTL
Gunning Transceiver Logic—a high-speed signaling technology used for
the processor-side bus in Intel-based systems
H
high asserted
signaling convention where a positive voltage indicates a TRUE or 1
condition, and 0 V indicates FALSE or 0
host
the computer in which the PCI-7041 resides
Hz
hertz—cycles per second
I
I/O
input/output—the techniques, media, and devices used to achieve
communication between machines and users
IDE
Integrated Drive Electronics—hard disk and built-in controller
IEEE
Institute of Electrical and Electronics Engineers
in.
inches
interrupt
a means for a device to request service from another device
interrupt level
the relative priority at which a device can interrupt
IRQ*
Interrupt signal