As an embedded engineer, design an embedded system for microwave oven to meet the requirements mentioned above. Provide the details of the designed embedded system in following format: d. Detailed hardware block diagram for the embedded system. e. Detailed software flow-chart for the operation of the embedded system. f. Choice of an appropriate microcontroller with justification.

A microwave oven (commonly referred to as a microwave) is an electric oven that heats and cooks food by exposing it to electromagnetic radiation in the microwave frequency range. This induces polar molecules in the food to rotate and produce thermal energy in a process known as dielectric heating. Microwave ovens heat foods quickly and efficiently for a homogeneous, high water content food item. The major components of any microwave oven include, but not limited to: - High Voltage Transformer: Microwaves require a high voltage of electricity to effectively function and heat food, usually at a minimum level of between 3000 or 4000 volts. Standard power outlets in India provide just 230 volts of electricity and therefore require a transformer to alter the power level and provide an adequate voltage to the appliance. This is where the high voltage transformer comes in, as it can convert the voltage to a much higher level. To do this, it uses a range of capacitors that loop electrical currents to multiply their power, and thereby supplying the microwave with the power it needs to run. - Magnetron: This part of a microwave receives the high voltage of electricity supplied by the transformer and converts it into microwave energy to heat the food. The magnetron does this with the use of a specially created diode, which controls electrons using magnetic fields. There are two ring-shaped magnets that deflect the electrons, causing them to move in a circular direction and prevent them from shooting off - Cooling Fan or Stirrer: Just like other heating appliances, a microwave oven is at risk of overheating and therefore contains a cooling fan to prevent this from happening. The cooling fan in a microwave works to dissipate the heat produced by the oven, ensuring it remains at a safe level. Older microwaves did not have cooling fans but instead featured a stirrer fan which was designed to do the same thing. - Cooking Cavity and Case: The cooking cavity is the central hollow part of a microwave where food is placed to be cooked, warmed up, or defrosted. The cooking cavity tends to be quite minor compared to the size of the entire microwave, which might seem unusual compared to other cooking appliances, where the size of cooking space is similar to the overall size of the appliance. Microwaves produced by microwave ovens are harmful to humans, and so it is important to keep these contained and away from people. This is why the cavity on a microwave is so deep, with thick walls to provide optimum safety for the user. When the user shuts the door of a microwave, it forms a sealed container through which no microwaves are able to escape. - Turntable: The turntable is a glass plate inside the microwave cavity, which is usually removable to make for easy cleaning. The purpose of the turntable is to rotate the food around so that it cooks more evenly, avoiding hot or cold spots. The turntable slots onto the bottom of the microwave cavity using ridges, allowing it to easily lock into place. - Door: The door of a microwave is there to allow the user easy access to the inner cavity for placing or removing plates of food. However, it has a much greater and more important function, which is to seal the microwaves inside the cooking cavity to prevent injury to the user. Microwave doors have seals along the edge to ensure a secure compartment is created when the door is closed. This prevents any microwaves from leaking out of the edges and causing burns. - Control Panel: The control panel is the part of the microwave oven, which allows the user to dictate what action they want the appliance to perform. Depending on the type of microwave, the control panel might be operated with a knob or with buttons. Using this, you can set the length of time and intensity of the microwave's cooking and select different operations such as defrost mode or grill mode. The control panel on a modern microwave will typically feature a digital display that counts down the amount of cooking time the microwave has left. As an embedded engineer, design an embedded system for microwave oven to meet the requirements mentioned above. Provide the details of the designed embedded system in following format: d. Detailed hardware block diagram for the embedded system. e. Detailed software flow-chart for the operation of the embedded system. f. Choice of an appropriate microcontroller with justification