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21 lines
605 B
Plaintext
21 lines
605 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/3/a/Bit.hdl
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/**
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* 1-bit register:
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* If load is asserted, the register's value is set to in;
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* Otherwise, the register maintains its current value:
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* if (load(t)) out(t+1) = in(t), else out(t+1) = out(t)
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*/
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CHIP Bit {
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IN in, load;
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OUT out;
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PARTS:
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// choose new input or current stored value
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Mux(a=dffOut, b=in, sel=load, out=muxOut);
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// DFF (new): hold val
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DFF(in=muxOut, out=out, out=dffOut);
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}
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