$1.$ Consider the following source code

$```$

#INT$\_$TIMER$0$

void int$\_$timer$0\_$isr$()\{$

outp$$t$\_$togg$\backslash$e$($PIN$\_$C$0)$;

$\}$

main$()\{$

$*$TRISC $=0$x$00$;

TOCON$->$TMR$0$ON $=1$;

T$0$CON$->$T$08$BIT $=0$;

TOCON$->$T$0$CS $=0$;

TOCON$->$PSA $=0$;

TOCON$->$T$0$PSx $=6$;

INTCON$->$GIE $=1$;

INTCON$->$PEIE $=1$;

INTCON$->$TMR$0$IE $=1$;

while$(1)\{$

$\}$

$\}$

$```$

a$)$ Compute TOc, TOf, and T led $($at the oscilloscope PIN$\_$C$0)$ for the code presented