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Sean O'Connor
ecdc6ab2bc
- Changed nandOut -> tmp - Changed notA, notB -> tmp1, tmp2 - Changed descriptive names -> tmp1, tmp2, tmp3, etc. Makes code cleaner and more concise while maintaining functionality.
21 lines
530 B
Plaintext
21 lines
530 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/Xor.hdl
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/**
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* Exclusive-or gate:
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* if ((a and Not(b)) or (Not(a) and b)) out = 1, else out = 0
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*/
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CHIP Xor {
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IN a, b;
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OUT out;
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PARTS:
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// Xor(a,b) = Or(And(a, Not(b)), And(Not(a), b))
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Not(in=a, out=tmp1);
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Not(in=b, out=tmp2);
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And(a=a, b=tmp2, out=tmp3);
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And(a=tmp1, b=b, out=tmp4);
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Or(a=tmp3, b=tmp4, out=out);
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}
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