rearranged the dir for github

- removed tools and pdfs
- rearranged the projects dirs
- added md files
- other minor changes

1 files changed, 20 insertions, 0 deletions

diff --git a/chips/FullAdder.hdl b/chips/FullAdder.hdl
new file mode 100644
index 0000000..451499f
--- /dev/null
+++ b/chips/FullAdder.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/02/FullAdder.hdl

+

+/**

+ * Computes the sum of three bits.

+ */

+

+CHIP FullAdder {

+    IN a, b, c;  // 1-bit inputs

+    OUT sum,     // Right bit of a + b + c

+        carry;   // Left bit of a + b + c

+

+    PARTS:

+    // Put you code here:

+    HalfAdder (a=a, b=b, sum=sum1, carry=carry1);

+    HalfAdder (a=sum1, b=c, sum=sum, carry=carry2);

+    Or (a=carry1, b=carry2, out=carry);

+}