Hardware Design Interview Question:

Which are the two ways of converting a two input NAND gate to an inverter?

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Short the two inputs of the nand gate and give the same input to the common wire,the nand gate works as an inverter.
One way is shorting the two inputs of the NAND gate and passing the input.

truth table:

A B output
1 1 0
0 0 1

The second way is passing the input to only one input(say A) of the NAND gate.Since the other input(say B) is floating, it is always logic one.

truth table:
A B output
1 1 0
0 1 1
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