diff --git a/education/computer engineering/ECE2700/Binary Logic.md b/education/computer engineering/ECE2700/Binary Logic.md
index 8f2c669..0856cdb 100644
--- a/education/computer engineering/ECE2700/Binary Logic.md	
+++ b/education/computer engineering/ECE2700/Binary Logic.md	
@@ -22,11 +22,20 @@ An AND gate will only output a 1 if *both* inputs are a one.
 | 1     | 0     | 0   |
 | 1     | 1     | 1   |
 ## Mathematical Expression
-An AND operation is mathematically expressed using a times symbol, or with no symbol at all
+An AND operation is mathematically expressed using a times symbol, or with no symbol at all:
 $$ y = x_1 \cdot x_2 = x_1x_2$$
 
 # NAND Gate
 A NAND gate outputs a 1 *unless* both inputs are enabled.
 
 ## Truth Table
-| 
\ No newline at end of file
+| $x_1$ | $x_2$ | $y$ |
+| ----- | ----- | --- |
+| 0     | 0     | 1   |
+| 0     | 1     | 1   |
+| 1     | 0     | 1   |
+| 1     | 1     | 0   |
+## Mathematical Expression
+A NAND operation is mathematically expressed using a bar over an AND operation:
+$$ y = \overline{x_1 \cdot x_2}$$
+