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Find the minimum number of NAND gates required to realise the given boolean expression: F = A'B + CD' + B'C
    Correct answer is '5'. Can you explain this answer?
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    Find the minimum number of NAND gates required to realise the given b...
    Minimum Number of NAND Gates Required to Realize the Given Boolean Expression

    To find the minimum number of NAND gates required to realize the given boolean expression F = A'B CD' B'CC, we need to simplify the expression and implement it using NAND gates.

    Simplifying the Boolean Expression

    1. Distribute the expression:
    F = A'B CD' B'C
    F = A'B C(D' B')

    2. Apply De Morgan's theorem:
    F = (A'B C(D' B'))'
    F = (A'B)' + (C(D' B'))'

    3. Simplify further:
    F = (A + B) + ((C + (D' B'))')

    Implementing the Simplified Expression

    To implement the simplified expression using NAND gates, we need to break it down into smaller sub-expressions and then combine them using NAND gates.

    Sub-Expression 1: A + B
    To implement the sub-expression A + B, we need 2 NAND gates.

    Sub-Expression 2: C + (D' B')
    To implement the sub-expression C + (D' B'), we need to break it down further.

    Sub-Sub-Expression 2.1: D' B'
    To implement the sub-sub-expression D' B', we need 2 NAND gates.

    Sub-Sub-Expression 2.2: C + (D' B')
    To implement the sub-sub-expression C + (D' B'), we need 3 NAND gates.

    Combining the Sub-Expressions

    Now, we can combine the sub-expressions using NAND gates.

    1. Connect the output of Sub-Expression 1 (A + B) to one input of a NAND gate.
    2. Connect the output of Sub-Expression 2.2 (C + (D' B')) to the other input of the NAND gate.
    3. Connect the output of this NAND gate to the output F.

    Total Number of NAND Gates Required

    The total number of NAND gates required is the sum of the gates used in each sub-expression.

    Total = 2 (Sub-Expression 1) + 3 (Sub-Expression 2.2) + 2 (Sub-Sub-Expression 2.1)
    Total = 7 NAND gates

    Therefore, the minimum number of NAND gates required to realize the given boolean expression F = A'B CD' B'CC is 7.
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    Community Answer
    Find the minimum number of NAND gates required to realise the given b...
    Step 1.
    Check if the expression is minimized using K-Map. If it isn't minimized minimize it.(If we're trying to find minimum no. of NAND Gates obtain SOP form, else obtain POS form).
    In this particular Example, the expression is already minimized.
    Step 2.
    We try to realize the expression using only AND and NOT by applying Demorgan's Law.
    A'B+CD'+B'C
    = C(B'+D')+A'B
    = C(BD)'+A'B
    = ((C(BD)')'.(A'B)')'
    So number of NAND Gates = 1 [for (BD)'] + 1 [for (C(BD)')'] + 1 [for (A'B)'] + 1 [for ((C(BD)')'.(A'B)')'] + 1 [for A'] = 5
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