hw5.md

第六週

Bit

// 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(b=in,a=o,sel=load,out=Muxab);
DFF(in=Muxab,out=o,out=out);

}

Register

// 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/Register.hdl

/**

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

CHIP Register { IN in[16], load; OUT out[16];

PARTS:
// Put your code here:
Bit(in=in[0],load=load,out=out[0]);
Bit(in=in[1],load=load,out=out[1]);
Bit(in=in[2],load=load,out=out[2]);
Bit(in=in[3],load=load,out=out[3]);
Bit(in=in[4],load=load,out=out[4]);
Bit(in=in[5],load=load,out=out[5]);
Bit(in=in[6],load=load,out=out[6]);
Bit(in=in[7],load=load,out=out[7]);
Bit(in=in[8],load=load,out=out[8]);
Bit(in=in[9],load=load,out=out[9]);
Bit(in=in[10],load=load,out=out[10]);
Bit(in=in[11],load=load,out=out[11]);
Bit(in=in[12],load=load,out=out[12]);
Bit(in=in[13],load=load,out=out[13]);
Bit(in=in[14],load=load,out=out[14]);
Bit(in=in[15],load=load,out=out[15]);

}

DFF