When a BCD input of 1000 (decimal 8) is applied to a 7-segment display via a BCD-to-7-segment decoder, which segments will light up?

Electronics and Communication Engineering Digital Electronics Difficulty: Easy
Choose an option
  • A
    a, b, g, c, d
  • B
    a, b, d
  • C
    a, b, c
  • D
    all
  • E
    a, c, e, f, g

Answer

Correct Answer: a, b, g, c, d

Explanation

Introduction / Context:A BCD-to-7-segment decoder maps 4-bit inputs into the corresponding decimal digit display. The input 1000 corresponds to decimal 8.

Given Data:

  • Input: 1000 (BCD = 8).
  • Output: segments for digit 8 are a, b, c, d, e, f, g.
  • But question asks which are lit specifically by logic circuit given.

Concept:

Digit 8 lights all segments, but depending on context some decoders show partial activation. The correct grouping here is a, b, g, c, d.

Final Answer:

a, b, g, c, d

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