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20 lines
467 B
Plaintext
20 lines
467 B
Plaintext
// This file is part of www.nand2tetris.org
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// and the book "The Elements of Computing Systems"
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// by Nisan and Schocken, MIT Press.
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// File name: projects/1/Or.hdl
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/**
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* Or gate:
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* if (a or b) out = 1, else out = 0
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*/
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CHIP Or {
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IN a, b;
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OUT out;
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PARTS:
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// Or(a,b) = Not(And(Not(a), Not(b))) - De Morgan's law
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Not(in=a, out=notA);
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Not(in=b, out=notB);
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And(a=notA, b=notB, out=andOut);
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Not(in=andOut, out=out);
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}
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