Homework Help is Here – Start Your Trial Now!
Engineering
Electrical Engineering
2. The 2-to-4 decoders with active-low outputs are available as building blocks. Each block has two enable inputs (EA, EB), two address lines (A1, AO) and 4 outputs (MO, M1, M2, M3). EA is active-high, EB is active-low. Both enable inputs must have active levels (EA=1, EB=0) in order to enable the decoder outputs. 2a) Show the truth table for the decoder block: 4 inputs are EA, EB, A1, AO; 4 outputs are MO to M3. 2b) Construct the 4-to-16 line decoder with active-low outputs using any number of the 2-to-4 decoders as building blocks. No inverters are available. Show the schematic. 2c) Construct the 3-to-8 line decoder with active-high outputs using any number of the 2-to-4 decoders as building blocks. Aby number of inverters are available. Show the schematic. Inputs and outputs of all decoders including building blocks have to be denoted with A0, A1, A2, A3 (if applicable) for inputs and 0, 1, 2,...,15 (if applicable) for outputs. No inputs should be left floating unconnected). Unused enable inputs must be connected to appropriate logic levels (Vdd or ground).

2. The 2-to-4 decoders with active-low outputs are available as building blocks. Each block has two enable inputs (EA, EB), two address lines (A1, AO) and 4 outputs (MO, M1, M2, M3). EA is active-high, EB is active-low. Both enable inputs must have active levels (EA=1, EB=0) in order to enable the decoder outputs. 2a) Show the truth table for the decoder block: 4 inputs are EA, EB, A1, AO; 4 outputs are MO to M3. 2b) Construct the 4-to-16 line decoder with active-low outputs using any number of the 2-to-4 decoders as building blocks. No inverters are available. Show the schematic. 2c) Construct the 3-to-8 line decoder with active-high outputs using any number of the 2-to-4 decoders as building blocks. Aby number of inverters are available. Show the schematic. Inputs and outputs of all decoders including building blocks have to be denoted with A0, A1, A2, A3 (if applicable) for inputs and 0, 1, 2,...,15 (if applicable) for outputs. No inputs should be left floating unconnected). Unused enable inputs must be connected to appropriate logic levels (Vdd or ground).

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
See similar textbooks
icon
Related questions
Question
**Digital Logic Design: Decoders Exercise** ### Problem Statement The 2-to-4 decoders with **active-low** outputs are available as building blocks. Each block has two enable inputs (EA, EB), two address lines (A1, A0), and 4 outputs (M0, M1, M2, M3). EA is active-high, EB is active-low. Both enable inputs must have active levels (EA=1, EB=0) in order to enable the decoder outputs. ### Tasks: **2a) Show the truth table for the decoder block:** - 4 inputs: EA, EB, A1, A0 - 4 outputs: M0 to M3 **2b) Construct the 4-to-16 line decoder with active-low outputs:** - Use any number of the 2-to-4 decoders as building blocks. - No inverters are available. - Show the schematic. **2c) Construct the 3-to-8 line decoder with active-high outputs:** - Use any number of the 2-to-4 decoders as building blocks. - Any number of inverters are available. - Show the schematic. ### Key Points: - Inputs and outputs of all decoders, including building blocks, must be denoted with A0, A1, A2, A3 (if applicable) for inputs and 0, 1, 2, ..., 15 (if applicable) for outputs. - No inputs should be left floating unconnected. - Unused enable inputs must be connected to appropriate logic levels (Vdd or ground). This problem presents an exercise in understanding and creating decoders using fundamental digital logic principles. You are expected to demonstrate your knowledge of how decoders work and your ability to construct complex decoding circuits using basic building blocks.
Transcribed Image Text:**Digital Logic Design: Decoders Exercise** ### Problem Statement The 2-to-4 decoders with **active-low** outputs are available as building blocks. Each block has two enable inputs (EA, EB), two address lines (A1, A0), and 4 outputs (M0, M1, M2, M3). EA is active-high, EB is active-low. Both enable inputs must have active levels (EA=1, EB=0) in order to enable the decoder outputs. ### Tasks: **2a) Show the truth table for the decoder block:** - 4 inputs: EA, EB, A1, A0 - 4 outputs: M0 to M3 **2b) Construct the 4-to-16 line decoder with active-low outputs:** - Use any number of the 2-to-4 decoders as building blocks. - No inverters are available. - Show the schematic. **2c) Construct the 3-to-8 line decoder with active-high outputs:** - Use any number of the 2-to-4 decoders as building blocks. - Any number of inverters are available. - Show the schematic. ### Key Points: - Inputs and outputs of all decoders, including building blocks, must be denoted with A0, A1, A2, A3 (if applicable) for inputs and 0, 1, 2, ..., 15 (if applicable) for outputs. - No inputs should be left floating unconnected. - Unused enable inputs must be connected to appropriate logic levels (Vdd or ground). This problem presents an exercise in understanding and creating decoders using fundamental digital logic principles. You are expected to demonstrate your knowledge of how decoders work and your ability to construct complex decoding circuits using basic building blocks.
Expert Solution
steps

Step by step

Solved in 3 steps with 3 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Arithmetic Operation and Code Conversion in Number System
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Fundamentals of Electric Circuits
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education
Electric Circuits. (11th Edition)
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON
Engineering Electromagnetics
Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,
SEE MORE TEXTBOOKS