Q1: Explain all the communication modules in a PIC microcontroller in detail with all the transmission models, ports, handshaking, voltage levels. Transmit "42A" with a microcontroller having clock frequency of 4Mhz. Set the baurdrate. Make the cycle illustration as well. Q2: What are the differences between UART, SPI,I2C. Make block diagrams and examples of each communication model. Write code of each and make connection diagrams. Use a single sensor to show the communication illustration of each with 4Mhz clock. Q3: What are timers, make a interrupt timer1 code. Q4: What is ADC/DAC. Make a 8-bit ADC with Vin=1.6V. Find resolution, draw connections and write c-code as well