1. Fundamental Logic Gates And, Or, Not

2. Logic Gates: The Basics Regulate the flow of electricity within circuits to perform desired functionalities Each gate receives one or more inputs but has only one output Represented using Schematics, Words, Symbols, and Boolean Equations

3. Logic Gates and Transistors

4. Logic Gates: AND SchematicSymbolBoolean Equation Y = A B (Output) Y is True: Only if both (Inputs) A and B are true.

5. Aside Boolean Variables Boolean variables are always capital letters and can only take on the values T (true) or F (false). For Example: A=TrueB=False X=true…

6. Logic Gates: AND continued… Ex. Are the following statements true or false ?  My name is Mr.Kurz and this is Room 231.  I am a human and I am the Prime Minister of Canada. ABY 000 010 100 111 ABY FFF FTF TFF TTT Truth Tables: or 

7. Note on Truth Tables There is only one pattern to follow! ABY FFF FTF TFF TTT ABY 000 010 100 111 ANY other way is wrong!

8. Logic Gates: OR SchematicSymbolBoolean Equation +Y = A + B (Output) Y is True: Only if (Inputs) A, B, or both A and B are true.

9. Logic Gates: OR continued… Ex. Are the following statements true or false ?  This class is ICE4M or is in Room 503.  I am a human or I am the Prime Minister of Canada. ABY 000 011 101 111 ABY FFF FTT TFT TTT Truth Tables: or 

10. Logic Gates: NOT SchematicSymbolBoolean Equation ¯Y = A Output (Y) is True: Only if Input (A) is false.

11. Logic Gates: NOT continued… Ex. Which of these are true or false?  This class is not ICE4M.  I am not the Prime Minister of Canada. AY 01 10 AY FT TF Truth Tables: or 

12. Example: Create a truth table for the following circuit: Steps:  Create Table  Fill in A, B, C  Solve one gate at a time using in between columns on the table  Solve for Y ABCA B(A+B)C 000 001 010 011 100 101 110 111  0 0 0 0 0 0 1 1 0 1 0 1 0 1 1 1

13. Additional Info Equivalent Terminology: For ‘n’ inputs into any logic gate, there will be 2 n rows in your truth table. True1onopenHigh V False0offclosedLow V

14. The other three gates NOR – “Not Or” NAND – “Not And” Xor - “One or the other, not both”

15. Today 1. Complete the Logic Gate Summary Chart 2. Use the IC schematics on the resources page to set up and test each of the 6 logic gates. Pin 14 goes to Power Pin 7 to ground.