John Mavrick's Garden

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Status: Links: Nand2Tetris Project 2


Add16 Gate

Notes

Code

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

    PARTS:
	HalfAdder(a=a[0], b=b[0], sum=out[0], carry=c0);
	FullAdder(a=a[1], b=b[1], c=c0, sum=out[1], carry=c1);
	FullAdder(a=a[2], b=b[2], c=c1, sum=out[2], carry=c2);
	FullAdder(a=a[3], b=b[3], c=c2, sum=out[3], carry=c3);
	FullAdder(a=a[4], b=b[4], c=c3, sum=out[4], carry=c4);
	FullAdder(a=a[5], b=b[5], c=c4, sum=out[5], carry=c5);
	FullAdder(a=a[6], b=b[6], c=c5, sum=out[6], carry=c6);
	FullAdder(a=a[7], b=b[7], c=c6, sum=out[7], carry=c7);
	FullAdder(a=a[8], b=b[8], c=c7, sum=out[8], carry=c8);
	FullAdder(a=a[9], b=b[9], c=c8, sum=out[9], carry=c9);
	FullAdder(a=a[10], b=b[10], c=c9, sum=out[10], carry=c10);
	FullAdder(a=a[11], b=b[11], c=c10, sum=out[11], carry=c11);
	FullAdder(a=a[12], b=b[12], c=c11, sum=out[12], carry=c12);
	FullAdder(a=a[13], b=b[13], c=c12, sum=out[13], carry=c13);
	FullAdder(a=a[14], b=b[14], c=c13, sum=out[14], carry=c14);
	FullAdder(a=a[15], b=b[15], c=c14, sum=out[15], carry=c15);
}

Truth Table

a b out
0000000000000000 0000000000000000 0000000000000000
0000000000000000 1111111111111111 1111111111111111
1111111111111111 1111111111111111 1111111111111110
1010101010101010 0101010101010101 1111111111111111
0011110011000011 0000111111110000 0100110010110011
0001001000110100 1001100001110110 1010101010101010


Interactive Graph