Which logic gate is given in the figure?

To identify the logic gate represented by the given circuit diagram, we can analyze the output step-by-step from the inputs to the output:

1. Input NOT Gates:
Both inputs $A$ and $B$ are first passed through individual NOT gates.
The outputs of these NOT gates are:
- For input $A$: $\overline{A}$
- For input $B$: $\overline{B}$

2. NOR Gate:
The signals $\overline{A}$ and $\overline{B}$ are then fed into a NOR gate. The output of a NOR gate is the negation of the sum (OR) of its inputs:
$\text{NOR Output}=\overline{\overline{A}+\overline{B}}$

3. Applying De Morgan's Law:
According to De Morgan's Law, the complement of the sum of two variables is equal to the product of their complements:
$\overline{X+Y}=\overline{X}·\overline{Y}$
Substituting $X=\overline{A}$ and $Y=\overline{B}$ into this law:
$\overline{\overline{A}+\overline{B}}=\overline{\overline{A}}·\overline{\overline{B}}=A·B$

4. Final NOT Gate:
The output of the NOR gate, which is $A·B$ (equivalent to an AND gate configuration), is finally passed through a NOT gate to produce output $C$:
$C=\overline{A·B}$

The expression $\overline{A·B}$ represents a NAND gate.