Reference no: EM131396622
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.
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LS TTL
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ALS TTL
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CMOS
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HCMOS
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VIL
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VIH
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AIL
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IIH
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VOL
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VOH
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COL
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LOH
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Fan-out
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Noise Margin
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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 low and 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.
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A
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B
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C
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D
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F
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0
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0
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0
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0
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0
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0
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0
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1
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0
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0
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1
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0
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0
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0
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1
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1
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0
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1
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0
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0
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0
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1
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0
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1
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0
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1
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1
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0
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0
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1
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1
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1
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1
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0
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0
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0
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1
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0
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0
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1
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1
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0
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1
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0
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1
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0
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1
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1
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1
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1
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0
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0
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1
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1
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0
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1
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1
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1
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1
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0
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1
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1
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1
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1
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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. D2
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. M2
TASK 3:
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. M3 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. D
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