# Lesson 23 — Digital Logic

<p class="block-synopsis">Logic gates, truth tables, and Sum of Products and Product of Sums expressions.</p>

**Objectives covered**

- **2.7** — I can relate digital inputs to digital outputs using tools such as fundamental digital logic gates (AND, OR, NOT), truth tables, and Sum of Products (SOP) and Product of Sums (POS) Boolean expressions.

<div class="block-toc">
  <a class="bt-card bt-reading" href="../Block2Reading/Obj07/ECE215_B2_Obj07_Reading.html">
    <span class="bt-kind">Reading</span>
    <h4>Digital Logic</h4>
    <p>The course reading for Objective 2.7.</p>
  </a>
  <a class="bt-card bt-flashcards" href="L23_Flashcards.html">
    <span class="bt-kind">Flashcards</span>
    <h4>Review deck</h4>
    <p>Key terms, equations, and ideas from this lesson, in a self-test deck.</p>
  </a>
  <a class="bt-card bt-slides" href="../_static/slides/ECE_215_Lesson23.pdf">
    <span class="bt-kind">Slides</span>
    <h4>Lesson 23 deck</h4>
    <p>The slides used in class, as a PDF.</p>
  </a>
  <a class="bt-card bt-practice" href="../_static/ECE215_BooleanQuickRef.pdf">
    <span class="bt-kind">Reference</span>
    <h4>Boolean Algebra Quick Reference</h4>
    <p>The simplification laws on one page. Reference only: not assessed.</p>
  </a>
  <a class="bt-card bt-practice" href="../downloads.html">
    <span class="bt-kind">Practice Problems</span>
    <h4>Work these before the quiz</h4>
    <p>Ungraded problems with answers, on the downloads page.</p>
  </a>
</div>