summer institute 2004 chips and gates an introduction linda soulliere [email protected]
TRANSCRIPT
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