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  1. C

    Determine no. of '1's in a 4-bit input

    Do you mean each pair of bits (2 bits) form a relationship of XOR (Exclusive OR)?
  2. C

    Determine no. of '1's in a 4-bit input

    Thank you for your reply. But when I split the k-map into 2 stages, each function cannot be further simplified as well. I wonder if my approach in the beginning is wrong. Should I treat each bit as input A,B,C,D respectively? Is there any other way to do this question?
  3. C

    Determine no. of '1's in a 4-bit input

    When given a 4-bit input, determine whether the number of '1's in the input is odd or even. For example, if input is 0110, output is 0. if input is 0111, output is 1. (a) simplify the Boolean logic expression using K-map. (b) draw the digital circuit using only NAND gates I tried to draw the...
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