Half$-$Adder and Full$-$Adder subcircuits $(25$ points$)$

In this exercise, you are going to create a Half$-$Adder subcircuit which is very much like a function

$($a$.$k$.$a$.$ subroutine$)$ in a programming language. The purpose of creating a subcircuit is just like

those of creating function in a programming language.

$$ Modularized approach for efficient circuit design

$$ Reusability of circuits

$$ Maintainability of circuits

$$ Readability of circuits

$1.$ First read the $$Subcircuits$$ section in Logisim Reference.

$$ Select Help$$Tutorial from the menu bar

$$ Expand Subcircuits

$$ Read all subsections but at least the first

two sections, $$creating circuits$$ and $$using

subcircuits$.$