Do problems 8 and 11

13a,13h and 15a,15b

8. Write a C program to toggle all bits of Port B every 200 ms. 9. Write a C program to toggle bits 1 and 3 or Port B every 200 ms. 10. Write a time delay function for 100 ms. 11. Write a C program to toggle only bit 3 of PORT C every 200 ms