Question I: a- What type of architecture is used in PIC18F452 and what is its advantages? b- What is the difference between the RAM and flash in the PIC18F452? c- What is the stack memory used for? d- How many stack levels are there in this PIC? e- It is known that the PIC's RAM could extend from 000 to 0xFFF. With the help of a diagram, show how this processor addresses this memory. f- Write an assembly program using PIC18F452 to carry out the following operations. Which flags if any are affected? i- Add 05E+0B9= and stores the result in memory locations 044 and 045.. ii- Subtract 02604A= and store the result in memory locations 050 and 051