19 lines
437 B
Text
19 lines
437 B
Text
|
// This file is part of www.nand2tetris.org
|
||
|
|
// and the book "The Elements of Computing Systems"
|
||
|
|
// by Nisan and Schocken, MIT Press.
|
||
|
|
// File name: tools/builtIn/HalfAdder.hdl
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Half adder. Computes sum, the least significnat bit of a + b,
|
||
|
|
* and carry, the most significnat bit of a + b.
|
||
|
|
*/
|
||
|
|
|
||
|
|
CHIP HalfAdder {
|
||
|
|
|
||
|
|
IN a, b;
|
||
|
|
OUT sum, // LSB of a + b
|
||
|
|
carry; // MSB of a + b
|
||
|
|
|
||
|
|
BUILTIN HalfAdder;
|
||
|
|
}
|