1. Experiment #2: Introduction to Logic Functions and their Gate-Level Hardware Implementations CPE 169 Digital Design Laboratory

2. Basic Logic Functions Defined with Truth Tables ANDOR Complement ABF 000 010 100 111 ABF 000 011 101 111 AF 01 10

3. Basic Logic Gates Hardware used to implement logic functions ANDOR Complement

4. Other Common Logic Gates Can be constructed from basic logic gates NANDNORXOR ABF 001 011 101 110 ABF 001 010 100 110 ABF 000 011 101 110

5. Nexys Development Board Nexys Board

6. Integrated Circuits (ICs) ICs contain logic gates SSI (small scale integration) 50-100 transistors per IC DIPs (dual in-line packages) Require power supply (Vcc, GND) 7400 Package Interior Layout7400 Dual In-Line Package

7. Circuit Implementation on Nexys Board Chips (IC’s) are place on Solderless Breadboard Solid-core wire connect circuit elements Power (Vcc) and Ground (GND) from Nexys

8. Solderless Breadboard Physical connections made without soldering Certain holes are physically connected to other holes physical hole connections

9. Circuit Connections to Nexys Signals Solid-core wire used for circuit connections to the Expansion Connector Nexys Board Nexys Expansion Connectors

10. Detailed Schematic Diagram Normal schematic diagram plus various IC related information: Pin numbers IC labels Gate labels Schematic DiagramDetailed Schematic Diagram

11. Experiment 2 Procedure Overview Implement basic logic circuits on the breadboard using Integrated Circuits 2-Input NAND 4-Input NAND 2-Input XOR 2-Input AND Made from NAND + Inverter (also from NAND) Verify your hardware implementations of each logic function. HEY!! There’s no #&$@^! “AND” gate IC in my Parts Kit !!?! ??