QUESTION $9$

For $F=abc+d,$ show $(1)$ its truth table.

Use a light bulb as the effect of F$,$ draw F$\text{'}$s equivalent $(2)$ switching circuit diagram $($using a switch's symbol$)$ and $(3)$ logic circuit diagram $($using gate symbols$).$

Note: AND gate shapes like a $\frac{1}{2}$ circle, OR a torpedo.