summer institute 2004 chips and gates an introduction linda soulliere linda_soulliere@gecdsb.on.ca

Summer Institute 2004

Chips and GatesAn Introduction

Linda Soullierelinda_soulliere@gecdsb.on.ca

Linda Soulliere

Summer Institute 2004

Agenda

Expectations Prior Learning Breadboard Fundamental Logic Gates Integrated Chips Classroom Activities

Linda Soulliere

Summer Institute 2004

Expectations

Describe the function of the fundamental logic gates including the function of each pin.

Derive the truth tables for the fundamental logic gates.

Write Boolean equations for the fundamental logic gates.

Linda Soulliere

Summer Institute 2004

Prior Learning

Introductory Electricity– Serial, parallel circuits,Ohm’s Law, Resistors– http://www.cs.uwaterloo.ca/High_School_Liaison/

Institute2002/resources/presenters.htm Breadboard

– Layout, wiring, input/output Wire Stripping

– www.classictech.on.ca Binary Numbers

– Binary conversions, addition

Linda Soulliere

Summer Institute 2004

Breadboard

Top Rail Connected

Bottom Rail Connected

ConnectedIn Fives

Divider

Linda Soulliere

Summer Institute 2004

Fundamental Logic Gates

AND OR NOT NAND NOR XOR (EOR)

NOT Brackets EOR AND OR

Linda Soulliere

Summer Institute 2004

Fundamental Logic Gates

Name Schematic Chip Number Truth Table Boolean Equation

Linda Soulliere

Summer Institute 2004

Integrated Chips

Integrated circuits or chips contain from two to a few hundred gates.

Number, direction Pin layout – 74 series

Notch on left side of gate

Chip Number

Pins 1 - 7

Linda Soulliere

Summer Institute 2004

Truth Table Activity

Wire appropriate gate. Record chip number. Use inputs A and B, record output X in

truth table. Draw and label schematic. Write out Boolean Expression

Linda Soulliere

Summer Institute 2004

Install ChipPins on

both sides of

gap

Notch to the

left

Linda Soulliere

Summer Institute 2004

Power to Circuit Board

Bottom Rail to Ground

+5V to top rail

Shadow…don’t worry

Linda Soulliere

Summer Institute 2004

Power to Chip

Wire from top rail to pin 14

(power to chip) Wire from pin 7 to bottom rail (ground chip)

Linda Soulliere

Summer Institute 2004

Wire the Chip

Input A to pin 1

Input B to pin 2

Pin 3 to output (S)

Dip Switches

Linda Soulliere

Summer Institute 2004

Classroom Activities

Wire schematic and record results in a truth table.

From schematic, write out Boolean expression.

From Boolean expression, draw schematic. Design a circuit that adds two binary

numbers. E.g. 0 + 0, 0 + 1, 1 + 0, 1 + 1 Troubleshooting and safety guide.

Linda Soulliere

Summer Institute 2004

Classroom Activities

Research– We have taken a look at the results of the six

fundamental logic gates but haven’t looked inside. What is the internal circuitry? Where are the gates used? How many gates are needed to complete a simple task such as addition?

– Answer these questions with your group members and prepare a poster to be presented to class members.

Linda Soulliere

Summer Institute 2004

Sources

Computer Engineering: An activities based approach

www.holtsoft.com www.acse.net www.classictechnology.ca http://javaboutique.internet.com/

LearnAndOrNotRA/ Students