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notes/2023-10-19.md

@@ -5,7 +5,7 @@ kernelspec:
 ---
 
 
-# Why did we learn the plubming commands?
+# Why did we learn the plumbing commands?
 
 You will not typically use them on a day to day basis, but they are a good way to see what happens at the interim steps and make sure that you have the right understanding of what git does.  
 
@@ -1061,4 +1061,4 @@ save your command history to `2023-10-19-log.txt` and put that file in your KWL
 
 ```{note}
 due to scheduling issues this will be late today
-```
+```

resources/understanding-logic-gates.md

@@ -0,0 +1,71 @@
+# Understanding Logic Gates
+
+## What are logic gates?
+
+Logic gates are used in digital circuits to preform logical functions in most electronics used today.
+
+There are many types of logic gates, the four main gates we will look at are AND, OR, XOR, and NAND.
+
+To understand how each one operates we can use truth tables to provide a better visual understanding.
+
+Note: truth tables use 0's and 1's as input to get its output.
+
+### AND Gate
+
+AND gates use the logic of if input A and input B are both value 1 then the output is 1. So if either of input A or B are value 0 then the output is 0.
+
+Truth Table:
+| A | B | A AND B |
+| --- | --- | :---: |
+| 0 | 0 | 0 |
+| 0 | 1 | 0 |
+| 1 | 0 | 0 |
+| 1 | 1 | 1 |
+
+### OR Gate
+
+OR gates use the logic of if input A or input B are value 1 then the output is 1. So if one of the inputs are 1 then the output; regardless of the other input, is also 1.
+
+Truth Table:
+| A | B | A OR B |
+| --- | --- | :---: |
+| 0 | 0 | 0 |
+| 0 | 1 | 1 |
+| 1 | 0 | 1 |
+| 1 | 1 | 1 |
+
+### XOR Gate
+
+XOR gates use the logic of if either input A or input B are value 1 then the output is 1 but if both are the same value then the output is 0. So if one of the inputs are a 1 then the output is 1, if both inputs are the same value then the output is 0.
+
+Truth Table:
+| A | B | A XOR B |
+| --- | --- | :---: |
+| 0 | 0 | 0 |
+| 0 | 1 | 1 |
+| 1 | 0 | 1 |
+| 1 | 1 | 0 |
+
+### NAND Gate
+
+NAND gates use the logic of if the inverse of input A has a value of 1 or if both input A and B are 0 then the output will be 1; otherwise, if the inverse of input A is 0 and input B is 1 then the output is 0.
+
+Truth Table:
+| A | B | A NAND B |
+| --- | --- | :---: |
+| 0 | 0 | 1 |
+| 0 | 1 | 1 |
+| 1 | 0 | 1 |
+| 1 | 1 | 0 |
+
+## Some Practice to learn the logic operations better
+
+A great way to understand and familiarize yourself with logic operators is to write functions for each logic gate in a program that take input A and B as parameters and return the output.
+
+#### Challenge
+
+In your Inclass repo, create a program that contains each logic gate as a function and post your experience to the [discussions page](https://github.com/introcompsys/discussion-fa23-community/discussions).
+
+## External resources
+
+- [Online Logic Simulator](https://lodev.org/logicemu/)