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⟩ Which of the following remarks about BDC is true?1. it is an 8-4-2-1 weight code2. complement of a number can be found efficiently3. (12345678)10 needs 4 bytes in BCD representation4. conversion to and from the decimal system can be easily done

1,3,4 are correct options Because BCD is 8-4-2-1 weighted code, whose complement cannot be found easily, given number requires 4 bytes as it is 8 digit number (4 bits for number), it is easily converted to binary.

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