Q.Express the following switching circuit in the symbolic form of logic. Construct the switching table:

In 1930 Claude Shannon noticed that an electric switch, which is either 'on' (allowing current through, marked 1) or 'off' (blocking current, marked 0), behaves exactly like a statement that is either true (T) or false (F); a lamp in the circuit glows exactly when current reaches it. Each switch in a circuit is assigned a statement letter (equivalent switches — always in the same state — share a letter; complementary switches — always in opposite states, such as S and S′ — correspond to a letter and its negation). Two switches S1, S2 connected in SERIES correspond to the conjunction p ∧ q, because the lamp glows only when BOTH switches are on. Two switches S1, S2 connecte …