Electrical and Electronics: Module 30

Module 30A: Digital Circuits (Core)

Suggested time: 10 - 15 hours

Level: Intermediate

Prerequisite: Module 29C

Foundational Objectives

To use appropriate terminology for electricity or electronics in context.
To become knowledgeable about 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 Objective

To use the vocabulary, make comparisons and apply the principles of digital electronics. (COM)

Learning Objectives	Notes
CODES: ENCODING and DECODING
30.1 Compare codes used in digital electronics: binary, hexadecimal, 8421 BCD, excess-3 and Gray code. (CCT)	Convert numbers from one code to another. Explain the application for each code. State the advantages and disadvantages for each code.
30.2 Describe the operation of a seven-segment display. (COM)	Draw and label the segments of a seven-segment display and indicate the pin numbers connected to each segment. Test a seven-segment display and determine whether it is common, anode or cathode.
30.3 Explain the operation of the encoder, decoder and driver. (COM, CCT, TL)	Construct a circuit that will display a decimal number.
30.4 Compare an LED display to an LCD display and list two advantages of using the LCD. (COM, CCT)	Provide schematic diagrams and data sheets describing the two types of displays.
FLIP-FLOPS
30.5 To explain the operation of the R-S flip-flop. (COM)	Have the students connect the circuit and describe the operation.
30.6 To explain the operation of the D flip-flop.
30.7 To describe the operation of the J-K flip-flop and explain why it is so widely used.

Module 30B: Digital Circuits (Core)

Suggested time: 10 - 15 hours

Level: Advanced

Prerequisite: Module 30A

Learning Objectives	Notes
COUNTERS
30.8 To describe how binary counting is accomplished.	Provide the students with a data sheet for a counter. Have them explain the operation.
30.9 To compare an up counter to a down counter and explain the difference in operation.	Provide data sheets to help explain the operation of the counter.
30.10 To explain the operation of a circuit used for frequency division.	Connect a circuit based on a schematic diagram for frequency division.
SHIFT REGISTERS
30.11 To compare the operation of a serial and parallel shift register.	Set up the circuits and observe the operation of each.
30.12 To describe the advantages of using a universal shift register. (COM)	Compare the universal shift register to the circuits in 30.11.

Module 30C: Digital Circuits (Core)

Suggested time: 10 - 15 hours

Level: Advanced

Prerequisite: Module 30B

Learning Objectives	Notes
CONVERTERS
30.13 To explain the processes of D/A and A/D conversion. (COM, CCT)	Discuss the processes. Construct circuits that have an analog input and digital output as well as a circuit that has digital input and analog output.
30.14 To explain the operation of a comparator.	Construct a circuit using op amps to compare voltages and indicate which voltage is greater.
30.15 To describe the operation of a simple digital circuit.	Build a breadboard to illustrate a simple digital circuit and explain the operation.