Description
RAM为随机存储器，一般都是CMOS型的，耗电极微，在PLC中通常用锂电池作后备，失电时也不会丢失程序；ROM为只读存储器，系统程序固化在其中，用户不可更改，失电不受影响；EPROM为可擦除存储器，其写入和擦除时都必须要用专用的写入器和擦除器，用户很不方便；EEPROM为电可擦除只读存储器，其内部的程序可通过编程器的写入和擦除
AC LINE FILTER, TRI-MAG.Inc. SF-1579 – REFURBISHED
CONTROLLER NOVELLUS 270019800 – REFURBISHED
CONTROLLER NOVELLUS 27017400 – REFURBISHED
HV GATE VALVE VAT DN100 PNEUMATIC SERIES 14
POWER SUPPLY ASTEC LPS 252 – REFURBISHED
PRINTED CIRCUIT BOARD, AMAT 0100-09099 – REFURBISHED
PRINTED CIRCUIT BOARD, AMAT 0100-35180 – REFURBISHED
PRINTED CIRCUIT BOARD, AMAT 0100-76258 REV. B
TRANSDUCER VIATRAN 376 – NEW
VACUUM VALVE, MKS 253B-2-50-2, Exhaust throtte valve
