Industrial Maintenance Technician Practice Test 2025 – Your All-in-One Guide to Exam Success!

Question: 1 / 400

What representation is used for a discrete input or output in the OFF condition?

Analog signal

Logic 1

Logic 0

In digital systems, discrete inputs and outputs are often represented using binary states, where each state corresponds to a specific condition. The OFF condition is represented by a Logic 0, which signifies that no current is flowing, or that a particular switch or device is in an inactive state. This binary representation is foundational in digital electronics, where devices recognize two distinct states: ON (Logic 1) and OFF (Logic 0).

Analog signals, on the other hand, provide a continuous range of values and are not suitable for representing discrete states. A variable condition might imply a range or an undefined state, which also does not fit the clear binary representation needed for discrete inputs and outputs. Therefore, Logic 0 effectively denotes the OFF condition in this context, emphasizing its role in binary logic and digital circuit design.

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