diff --git a/education/computer engineering/ECE2700/Binary Logic.md b/education/computer engineering/ECE2700/Binary Logic.md
index 0856cdb..13a6297 100644
--- a/education/computer engineering/ECE2700/Binary Logic.md	
+++ b/education/computer engineering/ECE2700/Binary Logic.md	
@@ -39,3 +39,17 @@ A NAND gate outputs a 1 *unless* both inputs are enabled.
 A NAND operation is mathematically expressed using a bar over an AND operation:
 $$ y = \overline{x_1 \cdot x_2}$$
 
+
+# OR Gate
+An OR gate outputs a 1 if either or both inputs are enabled.
+## Truth Table
+| $x_1$ | $x_2$ | $y$ |
+| ----- | ----- | --- |
+| 0     | 0     | 0   |
+| 0     | 1     | 1   |
+| 1     | 0     | 1   |
+| 1     | 1     | 1   |
+## Mathematical Expression
+A mathematical OR is notated with a $+$ symbol.
+
+$$ y = x_1 + x_2 $$