$1-$ Definitions of interrupt$/$stack and why we use in PIC$18$F$2-$ Write a MikroC code for basic input$/$output code $($input will be a button$($s$)$ and output will be LED$($s$)).$ Necessary MikroC keywords will be given as a list. Microcontroller figure will be given then additional components will be added by you$\mathrm{.}3-$ Analysis and finding an error for given MikroC program. Eror will be a logical error not typo error.