Design a circuit whose output goes high

Assignment Help Other Engineering
Reference no: EM131428093

Topic: HND Electrical & Electronic Engineering?

Title: Digital Electronic Circuits

AIM OF THIS ASSIGNMENT

You will undertake a number of investigative activities designed to develop your understanding of combinational Logic.

ASSIGNMENT OBJECTIVES

In this assignment, for LO4, you will need to show that you can:

  • Evaluate digital electronic device families.
  • Design combinational digital electronic circuits.
  • Design sequential digital electronic circuits.
  • Test digital circuits by construction or by computer simulation.

Merit Descriptors

Indicative Characteristics

 Contextualised Evidence.

In order to achieve a Merit the learner must:

The learners evidence shows:

To achieve the grade you will need to.

M2 - Select/design and apply appropriate methods/techniques.

Complex information/data has been synthesised and processed.

Use Karnaugh Maps to check the SOP is equivalent to the original Boolean expression (TASK 2).

M3 - present and communicate appropriate findings.

A range of methods of presentation have been used and technical language has been accurately used.

Create a report using a variety of word processing skills and using the appropriate engineering language (TASK 3).

 

Distinction Descriptors

Indicative Characteristics

 Contextualised Evidence.

In order to achieve a Distinction the learner must:

The learners evidence shows:

To achieve the grade you will need to.

D2 - Take responsibility for managing and organising activities.

Autonomy/independence has been demonstrated.

Demonstrate that you have simulated and built circuits on your own, without any support (TASKs 2 & 3).

TASK INTRODUCTION -

You have completed your engineering apprenticeship and have a position in the design department of your company. You have been asked by your line manager, Mithun, to produce a combinational logic circuit (Task 2). For Task 3 you have been requested to evaluate the operation of JK Flip Flops and present your findings and measurements to your line manager.

TASK 1: a) Using Manufacturer's datasheets complete the table below using Nominal values for the logic families.


LS TTL

ALS TTL

CMOS

HCMOS

VIL





VIH





IIL





IIH





VOL





VOH





IOL





LOH





Fan-out





Noise Margin





b) Define the terms Fan-out and Noise Margin.

TASK 2: Design a circuit whose output goes HIGH when its inputs are: A is high and B is lowand either input C or input D is also HIGH.

Procedure:

a) Derive a Boolean that describes the performance of the required circuit.

b) Rearrange the expression in Sum-of-Products (SOP) form.

c) Using simulation software, Draw the circuit diagram and simulate its operation.

d) Produce a four-variable truth table and apply all combinations of input variables to the circuit and each time note the logical state.

e) Demonstrate the circuit operation to your tutor.

A

B

C

D

F

0

0

0

0

 

0

0

0

1

 

0

0

1

0

 

0

0

1

1

 

0

1

0

0

 

0

1

0

1

 

0

1

1

0

 

0

1

1

1

 

1

0

0

0

 

1

0

0

1

 

1

0

1

0

 

1

0

1

1

 

1

1

0

0

 

1

1

0

1

 

1

1

1

0

 

1

1

1

1

 

Opportunity for Distinction (Part A) (Both Part A and Part B must be completed for D2) Demonstrate, with photographic evidence, that you have simulated the circuit in Task 2 without any help from your peers and/or tutor.

Opportunity for Merit - Use Karnaugh Maps to check the SOP found in Part b, is equivalent to the original Boolean expression, found in Part a.

TASK3: a) Design a 4 bit asynchronous counter using JK flip flops to count between 2 and 9. Your design must include:

  • Flow diagram
  • Sequence table
  • Karnaugh maps

b) Using a Logic Tutor or Multisim, construct the counter and demonstrate to your Tutor.

Opportunity for Merit

Produce a report containing the information found for TASKs 2 and 3. You will need to use a variety of word processing features and circuit diagrams created in Multisim. You will also need to use engineering language correctly.

Opportunity for Distinction (Part B)(Both Part A and Part B must be completed for D2) Demonstrate, with photographic evidence, that you have built the circuit in Task 3 without any help from your peers and/or tutor.

Description of activity undertaken (please be as specific as possible)

TASK 2: Design a circuit whose output goes HIGH when its inputs are: A is high and B is low and either input C or input D is also HIGH.

a) Demonstrate the circuit operation to your tutor.

TASK3: a) Using the Logic Tutors or Multisim construct the counter and demonstrate to your Tutor.

HND ASSIGNMENT EVIDENCE AND FEEDBACK

Learning

Outcome

Evidence in Report

(Student)

Location

(Student)

Assessor

Comments

Referred

Achieved

LO4.1



 

 

 

LO4.2



 

 

 

LO4.3



 

 

 

Merit

 

 

 

 

 

M2






M3



 

 

 

Distinction


 

 

 

 

D2

   


Reference no: EM131428093

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Reviews

len1428093

3/15/2017 5:23:22 AM

Design combinational digital electronic circuits. Design sequential digital electronic circuits. Test digital circuits by construction or by computer simulation. How the activity meets the requirements of the assessment and grading criteria, including how and where the activity took place.

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