1. COMBINATIONAL LOGIC Circuit Design

2. Steps Create the truth table Extract the Boolean Expression from the truth table or create a K-Map Simplify the expression Draw the schematic Build the circuit

3. Design a safety alarm system for a car that alerts the driver when the seatbelts have not been fastened, or when the door is ajar while the key is in the ignition. A=KeyB=DoorC=Seatbelt ABC X 000 001 010 011 100 101 110 111 0 0 0 0 0 1 1 1 ABC Boolean Expression Is: ABC + ABC + ABC=X Logic Problem

4. K-Map Dist. Th. 4 Th. 6 Dist. Th. 11 Dist. Boolean Simplification AB C 00 00 01 11 01 00 01 11 10 Create Expression & Simplify

5. Create Circuit Schematic X

6. NAND Only Solution

7. MultiSIM Demo