1. (5 marks) What is Manchester coding and explain a situation where it might be used. 2. (5 marks) Give an application where a switching regulator might be preferable to a linear one. 3. (5 marks) Give the pros and cons for a crystal oscillator verses an RC oscillator. 4. (5 marks) Draw a circuit which can drive a DC relay which requires a 12V 100 mA drive on its coil from a microcontroller which has a maximum output current sink/source of 4 mA at 3.3 V. 5. (5 marks) Give two reasons why, for high-speed signals, multilayer printed circuit boards are preferred over two layer ones. 1. (5 marks) What is Manchester coding and explain a situation where it might be used. 2. (5 marks) Give an application where a switching regulator might be preferable to a linear one. 3. (5 marks) Give the pros and cons for a crystal oscillator verses an RC oscillator. 4. (5 marks) Draw a circuit which can drive a DC relay which requires a 12V 100 mA drive on its coil from a microcontroller which has a maximum output current sink/source of 4 mA at 3.3 V. 5. (5 marks) Give two reasons why, for high-speed signals, multilayer printed circuit boards are preferred over two layer ones