Please I want the solutions for these questions. thank you

Microprocessors and microcontrollers 1. Give the operating principle of the watchdog. 2. Explain the instructions: DECFSZ, BTFSC, ANDL W and give an example of use for each of these instructions. 3. Give the role of the following bits: a- RPO b-RBIF c-EEIE 4. What is the role of the registry: a- TRISA b- TRISB c- INTCON 5. Give the operating principle of the interruption INT/RBO. 6. Calculates the clock cycle of the PIC 16F84, if the external frequency is 20MHz. 7. Give the role of the following bits: PSA, [PS2 :PS1 PS0], INTF and TOIF 8. Which register reads the value of Timer0? 9. Give PIC 16F84 Input Output Configuration Logs