// This file is part of www.nand2tetris.org
// and the book "The Elements of Computing Systems"
// by Nisan and Schocken, MIT Press.
// File name: projects/02/Adder16.hdl

/**
 * Adds two 16-bit values.
 * The most significant carry bit is ignored.
 */

CHIP Add16 {
    IN a[16], b[16];
    OUT out[16];

    PARTS:
   // Put you code here:
   FullAdder(a=a[0],b=b[0],c=false,sum=out[0],carry=carry1);
   FullAdder(a=a[1],b=b[1],c=carry1,sum=out[1],carry=carry2);
   FullAdder(a=a[2],b=b[2],c=carry2,sum=out[2],carry=carry3);
   FullAdder(a=a[3],b=b[3],c=carry3,sum=out[3],carry=carry4);
   FullAdder(a=a[4],b=b[4],c=carry4,sum=out[4],carry=carry5);
   FullAdder(a=a[5],b=b[5],c=carry5,sum=out[5],carry=carry6);
   FullAdder(a=a[6],b=b[6],c=carry6,sum=out[6],carry=carry7);
   FullAdder(a=a[7],b=b[7],c=carry7,sum=out[7],carry=carry8);
   FullAdder(a=a[8],b=b[8],c=carry8,sum=out[8],carry=carry9);
   FullAdder(a=a[9],b=b[9],c=carry9,sum=out[9],carry=carry10);
   FullAdder(a=a[10],b=b[10],c=carry10,sum=out[10],carry=carry11);
   FullAdder(a=a[11],b=b[11],c=carry11,sum=out[11],carry=carry12);
   FullAdder(a=a[12],b=b[12],c=carry12,sum=out[12],carry=carry13);
   FullAdder(a=a[13],b=b[13],c=carry13,sum=out[13],carry=carry14);
   FullAdder(a=a[14],b=b[14],c=carry14,sum=out[14],carry=carry15);
   FullAdder(a=a[15],b=b[15],c=carry15,sum=out[15],carry=carry16);
}