Re: MultiBit AND gate

Posted by cadet1620 on Mar 19, 2012; 8:50pm
URL: http://nand2tetris-questions-and-answers-forum.52.s1.nabble.com/MultiBit-AND-gate-tp3839418p3840325.html

The skeleton file for the And16 says:

// This file is part of the materials accompanying the book
// "The Elements of Computing Systems" by Nisan and Schocken,
// MIT Press. Book site: www.idc.ac.il/tecs
// File name: projects/01/And16.hdl

/**
 * 16-bit and gate.  For i=0..15 out[i] = a[i] and b[i]
 */

CHIP And16 {

    IN  a[16], b[16];
    OUT out[16];

This syntax means that a, b and out are 16 wire buses. Read appendix A.5.3 to learn more about buses.

And16 is nothing more than a box that has 16 And gates in it: out wire 0 = a wire 0 AND b wire 0, etc.

--Mark