Electrical and Electronics: Module 29

Module 29A: Digital Concepts (Core)

Suggested time: 10 - 15 hours

Level: Intermediate

Prerequisite: Module 28

Foundational Objectives

To use appropriate terminology for electricity or electronics in context.
To become knowledgeable of the various principles and characteristics of electricity and electronics.
To design and/or build circuits to an acceptable standard capable of producing a desired output.

Common Essential Learnings Foundational Objectives

To use the language of digital circuitry, using both symbolic and Boolean forms, to logic gate. (COM)
To strengthen students. understanding through applying knowledge of numbers. (NUM)

Learning Objectives		Notes
BINARY STATES
29.1 To identify devices that exhibit binary states.	Give examples of binary devices in the immediate surroundings.
29.2 To calculate the number of input combinations for an n-input binary system. (NUM)		Provide the students with a number for the input.
GATES
29.3 To draw the circuit symbol and truth table for each of the following gates: n-input and, or, inverter, negation, NAND, NOR, exclusive-OR and exclusive NOR gates. (CCT, IL)			Students use data sheets to locate symbols and to draw truth tables.
29.4 To write a single truth table for a 3-input device. (CCT, COM)				The outputs must perform the operation AND, NAND, OR and NOR.

Module 29B: Digital Concepts (Core)

Suggested time: 10 - 15 hours

Level: Advanced

Prerequisite: Module 29A

Learning Objectives		Notes
BOOLEAN EXPRESSIONS AND CIRCUIT SYMBOLS
29.5 To write a Boolean expression using the operators AND, OR and NEGATION. (COM)	Provide students with information on Boolean expressions.
29.6 To convert a Boolean expression to a logic gate circuit. (NUM)		Provide the Boolean expression.
29.7 To convert a logic gate circuit to a Boolean expression.		Provide the logic gate circuit.
DEMORGAN'S THEOREM
29.8 To state Demorgan. s theorem.			Have students locate the theorem and explain it in their own words.
29.9 To apply Demorgan. s theorem to a Boolean expression. (CCT)			Provide the students with a Boolean expression.
29.10 To apply Demorgan. s theorem to a logic gate circuit.			Provide a logic gate circuit for the students to examine.

Module 29C: Digital Concepts (Core)

Suggested time: 10 - 15 hours

Level: Advanced

Prerequisite: Module 29B

Learning Objectives	Notes
LOGIC CIRCUIT DESIGN
29. 11 To design a logic gate circuit.	Design a circuit using only 2-input NAND/NOR gates that enables engine ignition only when the driver and passenger have their seat belts connected.
29.12 To verify the design.	Verify the design of the circuits in 29.11 by drawing up a truth table.
19.13 To test the circuit functions against the truth table.	Build the logic circuit in 29.11 and verify the operation.