描述
它用于永久性地存储用户数据，使用户程序不丢失。这些设备，如存储卡、存储磁带、软磁盘或只读存储器。而为实现这些存储，相应的就有存卡器、磁带机、软驱或ROM写入器，以及相应的接口部件。各种PLC大体都有这方面的配套设施。
Expedited shipping available
NATIONAL INSTRUMENTS IMAQ DIGITAL TEST FIXTURE CARD
National Instruments PCI RS-232/485, 4 Port
National Instrument PCI RS-232/485 Isolated 4 port
National Instruments TBX-68 I/O Connector Block; DIN
National Instruments PCI 232/485 8ch board with cable
National Instruments TBX-96 DIN Rail Terminal Block NEW
2 National Instruments AT-GPIB/TNT ISA Card 181830-01
