Display interfacing: A binary number can be converted to a 7-segment display pattern by using a(n) ________.

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Solve this multiple-choice question and choose the correct option.

Accepted Answer

Introduction / Context:Seven-segment displays require segment control signals (a–g). Converting a binary code (often BCD) into segment lines is a classic display-interface problem. Given Data / Assumptions: Input: binary/BCD code for a digit. Output: seven segment control lines. Goal: identify the digital block that performs this mapping. Concept / Approach:A decoder maps an encoded input into a set of outputs; a BCD-to-7-segment decoder asserts the correct segment lines for each digit. An encoder does the reverse (many inputs to coded output). Step-by-Step Solution: Step 1: Recognize the direction: code → many segment lines.Step 2: This is a decode operation.Step 3: Choose “decoder.” Verification / Alternative check:Standard ICs like 7447/7448 (TTL) are BCD-to-7-segment decoders/drivers, confirming the mapping role. Why Other Options Are Wrong: Encoder: Opposite direction (many lines to fewer coded bits).Multiplexer: Selects one of many inputs to a single output; not direct code-to-segment mapping.Magnitude comparator: Compares numbers; does not generate segment codes.Priority encoder: Still an encoder, not a decoder. Common Pitfalls:Confusing encoder vs. decoder directionality. Final Answer:decoder

Display interfacing: A binary number can be converted to a 7-segment display pattern by using a(n) ________.

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