Sketch the following logic gates, labelling inputs and outputs, and define logic gate and pixel.

3. a) i) Sketch the following logic gates, clearly labelling inputs and outputs

• XOR Gate:

  \begin{tikzpicture}[scale=0.8, transform shape] \draw (0,0) node[xor gate, draw, logic external ports=left, logic gate inputs=A and B, logic gate outputs=Q] {}; \end{tikzpicture}

• NAND Gate:

  \begin{tikzpicture}[scale=0.8, transform shape] \draw (0,0) node[nand gate, draw, logic external ports=left, logic gate inputs=A and B, logic gate outputs=Q] {}; \end{tikzpicture}

• NOR Gate:

  \begin{tikzpicture}[scale=0.8, transform shape] \draw (0,0) node[nor gate, draw, logic external ports=left, logic gate inputs=A and B, logic gate outputs=Q] {}; \end{tikzpicture}

ii) What is a logic gate?

A logic gate is an elementary building block of a digital circuit that performs a basic logical operation on one or more binary inputs and produces a single binary output.

iii) What is a pixel?

A pixel (short for "picture element") is the smallest individual unit of a digital image or display that can be assigned a color and displayed. It is the fundamental component of all images shown on a screen.

b) The question is incomplete as the specific tasks or questions related to Figure 1 and Figure 2 are not visible in the provided image.