Explain the main materials used in an integrated circuit (IC) and their purpose.2.Describe the process that a circuit goes through from a macroscopic design to a manufactured chip.3.What are the main parameters necessary for ordering a commercial IC?4.Design a printed circuit board for a linear power supply. The linear power supply specifications are: 12Vdc @ 1A, Vripple <= 120 mVrms at maximum load current. You need to include the electrical schematic and printed circuit board design