Consider the Karnaugh map given below, where X represents “don't care” and blank represents 0. Assume for all inputs $(a, b, c, d)$, the respective complements $(\overline{a},\overline{b},\overline{c},\overline{d})$ are also available. The above logic is implemented using 2-input NOR gates only. The minimum number of gates required is _________.

Consider the Karnaugh map given below, where X represents “don't care” and blank represents 0. Assume for all inputs (a, b, c, d) , the respective complements ( a, b, c, d) are also available. The above logic is implemented using 2-input NOR gates only. The minimum number of gates required is …

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