nand2tetris/projects/01/Mux.hdl

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// 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/01/Mux.hdl
/**
* Multiplexor:
* out = a if sel == 0
* b otherwise
*/
// COST = 8 NAND Gates
CHIP Mux {
IN a, b, sel;
OUT out;
PARTS:
Not(in=sel, out=n);
And(a=a, b=n, out=x);
And(a=b, b=sel, out=y);
Or(a=x, b=y, out=out);
}