// 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/1/Or.hdl
/**
 * Or gate:
 * if (a or b) out = 1, else out = 0
 */
CHIP Or {
    IN a, b;
    OUT out;

    PARTS:
    // Or = Not(And(Not(a), Not(b)))
    Not(in=a, out=tmp1);
    Not(in=b, out=tmp2);
    And(a=tmp1, b=tmp2, out=tmp3);
    Not(in=tmp3, out=out);
}