Examlex
A biologist is interested in identifying pairs of molecular structures responsible for adhesion between bovine (cow) intestinal cells.Which pairs of structures should the biologist include as possibilities during his search?
Retentive Timer
A type of PLC timer that retains its value even after the power is turned off or the controlling logic is no longer true.
Nonretentive Timer
A timer in a control system that does not retain its count or state after a power cycle, restarting from zero.
Retentive
In the context of programmable logic controllers, refers to memory or functions that retain their value or state even after the PLC is turned off or loses power.
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