#include <REGX52.H> //biblioteka do obslugi pinów na plytce

#define _A 0xC0

void main(void) {
    while(1) {

        P2 = 0xFE; //

        if(P2 == 0xEE) P1 = 0x8E; // 1 - "F"

        if(P2 == 0xDE) P1 = 0xB0;   // 2 - "3"

        if(P2 == 0xBE) P1 = 0xF8;   // 3 - "7"

        if(P2 == 0x7E) P1 = 0x83; // 4 - "B"

        else P1 = 0xFF;

        P2 = 0xFD;

        if(P2 == 0xED) P1 = 0xC0;   // 5 - "0"

        if(P2 == 0xDD) P1 = 0x99; // 6 - "4"

        if(P2 == 0xBD) P1 = 0x80; // 7 - "8"

        if(P2 == 0x7D) P1 = 0xC6; // 8 - "C"

        else P1 = 0xFF;

        P2 = 0xFB;

        if(P2 == 0xEB) P1 = 0xF9;   // 9 - "1"

        if(P2 == 0xDB) P1 = 0x92;   // 10 - "5"

        if(P2 == 0xBB) P1 = 0x90;   // 11 - "9"

        if(P2 == 0x7B) P1 = 0xA1; // 12 - "D"

        else P1 = 0xFF;

        P2 = 0xF7;

        if(P2 == 0xE7) P1 = 0xA4;   // 13 - "2"

        if(P2 == 0xD7) P1 = 0x82;   // 14 - "6"

        if(P2 == 0xB7) P1 = 0x88;   // 15 - "A"

        if(P2 == 0x77) P1 = 0x86; // 16 - "E"

        else P1 = 0xFF;
    }
}