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US4713756A Non-volatile memory device for a programmable controller 失效
用于可编程控制器的非易失性存储器件

Non-volatile memory device for a programmable controller
摘要:
A nonvolatile memory storage device for a programmable controller to provide an archival back-up for user programs with the use of a battery or other alternate back-up power source. The device can be attached to the programmable controller using a frangible tampering indicator that will break on the removable of the device from the programmable controller.
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