text: #ifndef MULTIPLEX7SEG_H
  #define MULTIPLEX7SEG_H
  
  #include "Arduino.h"
  #include <avr/interrupt.h>
  
  namespace Multiplex7Seg 
  {
  	extern unsigned long msecs;
  	extern volatile unsigned long count;
  	extern volatile char overflowing;
  	extern volatile unsigned int tcnt2;
  	extern byte digits[4];
  	extern byte noOfDigits;
  	extern byte enableZB;
  	extern byte *digitsPtr; 
  	extern byte *digitPinsPtr;
  	extern byte *segmentPinsPtr; 
  	extern byte digitValueCurrent;
    extern byte digitValuePrevious; 
  	void set(byte _enableZB, byte _noOfDigits, byte *digitPins, byte *segmentPins);
  	void _overflow();
  	void loadValue(int value);
  	void update();
  }
  #endif