Subject = digital logic

Please show in detail all the steps required to understand the concept. i wont hesitate to leave a like.

2(a) What is a logic gate? Describe each fundamental gates with truth table, logic symbol and logic expression. 6 (b) What is the significance of Karnaugh's map? Minimize X= ABC+BCD+ABCD+ABC using K-map. 5 (c) State De-morgan's theorem. (d) : Describe the symbols ' ' \& ' . (3)