The blinking light indicates that it is time for a check-up. The cimputer automatically does this upon hitting a specific mileage. I am suffering from the same thing with my J30. When I find the reset button, I'll update this section.
Your question is vague, but I think what you are asking is what are the most basic commands issued to a computer to make it do things. At the very lowest level, there are bits (organized into bytes) representing machine instructions. This is called 'machine code'. Each instruction corresponds to exactly one operation by the processor. Of course, it is very difficult for humans to create functional programs in this form, so utilities called assemblers, interpretors, and compilers allow much more complicated programs to be created.
On you're key bord press prt sc it's between pause/break and insert/num lk.Your screen will pause for a quick second and thats hoow you'll know it took the picture. I hope this helped :) just improveing your awnser :) (top right corner or atleast right on my cimputer)
It varies on the charactar becuase its weird the cimputer can do thungs you cant but you can throw with O circle if u get close to someone like cornel darren ect. Pig josh you cant but the computer can its weird but yea......