National Instruments PXI-8336 用户手册

device

a plug-in instrument card or pad that can contain multiple channels and 
conversion devices. Plug-in boards and PCMCIA cards, which connect to 
your computer parallel port, are examples of devices.

digital trigger

a TTL level signal having two discrete levels—a high and a low level

DMA

direct memory access—a method by which data can be transferred to/from 
computer memory from/to a device or memory on the bus while the 
processor does something else. DMA is the fastest method of transferring 
data to/from computer memory.

dyad

MXI-4 dyad refers to any of the following 4 pairs of MXI-4 cards:

•

PCI-8331 and PXI-8331

•

PCI-8336 and PXI-8336

•

PXI-8331 and PXI-8331

•

PXI-8336 and PXI-8336

FPGA

Field Programmable Gate Array—a logic device that has its functionality 
defined after it is manufactured.

IEEE

Institute of Electrical and Electronics Engineers

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; 
it offers a theoretical maximum transfer rate of 132 Mbytes/s.

PCI-PCI bridge

a device that transparently expands the PCI bus on a computer motherboard 
to another bus segment in the same machine. The bridge expands the 
number of PCI expansion slots, but remains transparent to the end user.