$What happens inside a credit card#erikcu#action#000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000;1111111<0000000000P0001021111110000000000PP00100:111010000000000PP0010002100100P000000PPP0P10000000100P0P0000PPP0P10000000;00P0P0000PPP0P<0000000:00P0P0000PPP0P=000000010PP000000P0P0P1000000010PP0P0000PPP0P1000000010PP0P0000PPP0P1100000310PP0P0000PPP0P111000;110PPP00000PPP0P1111031110PPP00000PPPPP:1111111=00PP00000PPPPP000000000P0PPP0000PPPPP0000000000PP0P0000PPPPP000P00P0PPPP0P0000PPPPP000P00P0PP0PPP0000PPP0PP0PP00P0P00P0P0000PPPPPP0PP00P00P0PPP0000PPPPPP0PP00P0PP0P0P000000PPPP00P0000PP0PPP0000P0P0000PP00P00P00PP000000P00P0PP00P0PP0P0000|5^228,246!11^300,324,444,252!10^372,300!0^354,288!0^372,282!0^390,294!0^396,318!0^384,342!0^354,348!0^324,330!0^312,294!0^318,240!0^384,216!0^450,294!0^420,384!4^252,378,1!4^396,378,1#