#include "mbed.h"
#include "TextLCD.h"

BusIn inputs (p5,p6,p7,p16);
BusOut outputs(LED1,LED2,LED3,LED4);
DigitalIn a(p5),b(p6),c(p7),d(p16) ;

int I,O;
int main()
{

	a.mode(PullUp);
	b.mode(PullUp);
	c.mode(PullUp);
	d.mode(PullUp);

	while(1)
	{
		I=inputs;
		O=0;
		
		if(((I&7)==6)|| ((I&7)==1))
			O=1;
			
		if(((I&15)==15)|| ((I&15)==8))
			O=O|2;
			
		if((I&5)==1)
			O=O|4;
			
		if(((I&10)==8)|| ((I&12)==4))
			O=O|8;
			
		outputs=O;
	}
}