Automation System
Programmable controllers:

are widely used in many different industries
(a) and (c) above
None of these
are programmed using relay ladder logic
cannot perform functions other than relay logic

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Automation System
The program counter:

is where arithmetic is done in a computer.
decides which program to run
counts the number of instructions that have been executed
contains the address of the next instruction to be executed
None of these

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