chips/Bit.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/03/a/Bit.hdl

/**
 * 1-bit register:
 * If load[t] == 1 then out[t+1] = in[t]
 *                 else out does not change (out[t+1] = out[t])
 */

CHIP Bit {
    IN in, load;
    OUT out;

    PARTS:
    // Put your code here:
    Mux (a=dffout, b=in, sel=load, out=muxout);
    DFF (in=muxout, out=dffout);
    Or (a=dffout, b=dffout, out=out);
}