Decoder fundamentals Which statement best describes the function of a digital decoder in logic systems?

Introduction / Context:Decoders translate binary input codes into one-of-N outputs (or into a coded representation) to select devices, display digits, or route signals. Examples include 2-to-4, 3-to-8 decoders and BCD-to-7-segment decoders.

Given Data / Assumptions:

• Binary input code supplied to the decoder.
• Outputs correspond to specific symbols, lines, or digits.

Concept / Approach:A decoder interprets the binary input and activates exactly one output line (for one-of-N) or drives a pattern (e.g., 7 segments) to represent the coded value. This is the inverse operation of an encoder.

Step-by-Step Solution:Recognize “binary to specific output” mapping as the standard decoder role.Examples: 74HC138 (3-to-8 line decoder) or 74LS47 (BCD-to-7-segment).Therefore select the statement that describes converting a binary number into an output representing a character/digit.

Verification / Alternative check:Datasheets and textbooks define decoders as code translators from inputs to outputs with one-hot or formatted patterns.

Why Other Options Are Wrong:Decimal to binary: that is encoding or binary conversion, not decoding in logic IC terms.Preventing improper operation: too vague; decoders are functional routing/selection devices.Brand interoperability: unrelated to decoder function.

Common Pitfalls:Confusing decoder with demultiplexer—though related, demultiplexers route a single data line to multiple outputs under binary select inputs.

Final Answer:A decoder converts a binary number into a specific output representing a particular character or digit.