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Question 1.26: Draw a NAND gate and its dual and describe their outputs in ...

Draw a NAND gate and its dual and describe their outputs in terms of assertion level logic.

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These are shown in Fig. 1.18. In the NAND form the output is active-LOW (because of the bubble) if both inputs are active-HIGH. In its dualled (OR) form the output is active-HIGH if either input is active-LOW (because of the bubbles). The two forms effectively describe the neccesary conditions for outputs of 0 (LOW) and 1 (HIGH) respectively from the circuit.

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