From d3a0cc3a8ba6dfeb64d3faeffdeb6845b60e5840 Mon Sep 17 00:00:00 2001
From: Yuchen Pei <me@ypei.me>
Date: Sat, 20 Jan 2018 15:41:49 +0100
Subject: rearranged the dir for github

- removed tools and pdfs
- rearranged the projects dirs
- added md files
- other minor changes
---
 chips/DMux4Way.hdl | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 chips/DMux4Way.hdl

(limited to 'chips/DMux4Way.hdl')

diff --git a/chips/DMux4Way.hdl b/chips/DMux4Way.hdl
new file mode 100644
index 0000000..18b725d
--- /dev/null
+++ b/chips/DMux4Way.hdl
@@ -0,0 +1,23 @@
+// 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/01/DMux4Way.hdl
+
+/**
+ * 4-way demultiplexor:
+ * {a, b, c, d} = {in, 0, 0, 0} if sel == 00
+ *                {0, in, 0, 0} if sel == 01
+ *                {0, 0, in, 0} if sel == 10
+ *                {0, 0, 0, in} if sel == 11
+ */
+
+CHIP DMux4Way {
+    IN in, sel[2];
+    OUT a, b, c, d;
+
+    PARTS:
+    // Put your code here:
+    DMux (in=in, sel=sel[1], a=e, b=f);
+    DMux (in=e, sel=sel[0], a=a, b=b);
+    DMux (in=f, sel=sel[0], a=c, b=d);
+}
-- 
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