Question

question 29
if one input of a two - input nand gate is tied to + vcc, the nand functions as
an inverter.
a nor gate.
an and gate.
an or gate.

Explanation:

Step1: Recall NAND gate operation

The output of a two - input NAND gate is \(Y=\overline{A\cdot B}\).

Step2: Substitute one input (say \(B = +V_{cc}\) which is equivalent to logic \(1\))

If \(B = 1\), then \(Y=\overline{A\cdot1}=\overline{A}\).
Since the output \(Y\) is the complement of input \(A\), the NAND gate functions as an inverter.

Answer:

an inverter.