In the operation of a programmable controller:

1.	In the operation of a programmable controller:
A.	all of the logic status is maintained in memory
B.	any latched data must be done using an external latching relay
C.	mathematics cannot be performed
D.	All of the above
E.	None of the above
Answer» B. any latched data must be done using an external latching relay

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In the operation of a programmable controller:

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