05 May In your own words, explain the reason for performing the experiment and give a concise summary of the theory involved, including any mathematical detail relevant to later discussion
Abstract
A brief description of the experiment. The abstract should not exceed four or five sentences.
Introduction
In your own words, explain the reason for performing the experiment and give a concise summary of the theory involved, including any mathematical detail relevant to later discussion in the report.
Conclusions
This section should reflect your understanding of the experiment. Important points to include are a brief discussion of your final results, an interpretation of the actual experimental results as they apply to the objectives of the experiment set out in the introduction should be given
EET130
Digital Systems I
Instructor: enter instructor name
Lab 1
Latches and Flip-flops
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Honor Pledge:
I pledge to support the Honor System of ECPI. I will refrain from any form of academic dishonesty or deception, such as cheating or plagiarism. I am aware that as a member of the academic community, it is my responsibility to turn in all suspected violators of the honor code. I understand that any failure on my part to support the Honor System will be turned over to a Judicial Review Board for determination. I will report to the Judicial Review Board hearing if summoned.
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Student Name Date: 1/1/2018
Adding your name here constitutes your agreement to the Honor Pledge as stated.
Contents Abstract 3 Introduction 3 Part 1: Methods and Procedures 4 Part 1: Results and Figures 5 Conclusion 9 References 10
Abstract
|
(This instruction box is to be deleted before submission of Lab report) What is an Abstract? Write the Abstract, Introduction and Conclusion last! This should include a brief description of all parts of the lab. The abstract should be complete in itself. It should summarize the entire lab; what you did, why you did it, the results and your conclusion. Think of it as a summary to include all work done. It has to be succinct but yet detailed enough for a person to know what this report deals with in its entirety. |
I ntroduction
|
(This instruction box is to be deleted before submission of Lab report) What is an Introduction? Write the Abstract, Introduction and Conclusion last! In your own words, explain the reason for performing the experiment and give a concise summary of the theory involved, including any mathematical detail relevant to later discussion in the report. State the objectives of the lab as well as the overall background of the relevant topic. |
Part 1: Methods and Procedures
I. Objective:
· Build and observe functioning of a S’-R’ and S-R latches
· Build and observe functioning of a J-K flip-flop
II. Parts List:
S-R latch (Active-High Input):
· 2 – 7402N Quad 2-input NOR gates
· 1 – 1 KOhm resistor
· 2 – SPDT switches
· 2 – Digital probes
· 1 – VCC (5V)
· 1 – GND
S’-R’ latch (Active-LOW Input)
· 2 – 7400N Quad 2-input NAND gates
· 1 – 1 KOhm resistor
· 2 – SPDT switches
· 2 – Digital probes
· 1 – VCC (5V)
· 1 – GND
J-K flip-flop:
· 1 – J-K flip-flop
· 1 – 1 KOhm resistor
· 2 – SPDT switches (to control preset and clear inputs)
· 1 – Clock voltage (to generate clock signal for flip-flop
· 2 – Digital probes
· 1 – VCC (5V)
· 1 – GND
III. Introduction:
Both latches and flip-flops are considered as sequential circuits and can act as data storage devices. In these circuits current output depend on not only the current inputs but also on previous outputs. This experiment demonstrates the function of S-R and S’-R’ latches as well as J-K flip-flops.
IV. Procedures:
1. Construct the circuit shown in Figure 1(a) using components listed in parts list for S-R latch.
2. Change input S and R by changing SPDT switches and observe outputs Q and Q’ using digital probes.
3. Write down results using Table 1.
4. Repeat steps 1-2 for S’-R’ latch (Figure 1(b)).
5. Write down results using Table 2.
6. Construct the circuit shown in Figure 2 (top) using components listed in parts list for J-K flip-flop.
7. Change inputs preset and clear as shown in Figure 2 (bottom) and observe outputs Q and Q’ using digital probes.
8. Write down results using Table 3.
Part 1: Results and Figures
Figure 1: (a) S-R latch, (b) S’-R’ latch
Table 1: S-R latch results
|
S |
R |
Q |
Q’ |
|
0 |
0 |
0 |
0 |
|
0 |
1 |
0 |
1 |
|
1 |
0 |
1 |
0 |
|
1 |
1 |
0 |
0 |
Table 2: S’-R’ latch results
|
S’ |
R’ |
Q |
Q’ |
|
0 |
0 |
1 |
1 |
|
0 |
1 |
1 |
0 |
|
1 |
0 |
0 |
1 |
|
1 |
1 |
0 |
1 |
Figure 2: J-K flip-flop
Table 3: J-K flip-flop (’ indicates bar)
|
Clock |
Preset’ |
Clear’ |
Q |
Q’ |
|
0 |
0 |
1 |
0 |
0 |
|
1 |
0 |
1 |
0 |
1 |
|
0 |
0 |
1 |
1 |
1 |
|
1 |
0 |
1 |
1 |
1 |
|
0 |
0 |
1 |
0 |
1 |
|
1 |
0 |
1 |
1 |
1 |
|
0 |
1 |
1 |
0 |
0 |
|
1 |
1 |
1 |
1 |
0 |
|
0 |
1 |
1 |
1 |
1 |
|
1 |
1 |
1 |
0 |
1 |
|
0 |
1 |
1 |
0 |
1 |
|
1 |
1 |
1 |
0 |
0 |
|
0 |
1 |
1 |
1 |
1 |
|
1 |
1 |
1 |
1 |
1 |
|
0 |
1 |
0 |
0 |
1 |
|
1 |
1 |
0 |
1 |
0 |
|
0 |
1 |
0 |
0 |
1 |
|
1 |
1 |
0 |
1 |
0 |
Conclusion
|
(This instruction box is to be deleted before submission of Lab report) What is a Conclusion? Write the Abstract, Introduction and Conclusion last! This section should reflect your understanding of the experiment conducted. Important points to include are a brief discussion of your results, an interpretation of the actual experimental results as they apply to the objectives of the experiment set out in the introduction should be given. Also, discuss any problems encountered and how they were resolved. |
(Students need to write this).
References
Floyd, T. L. (2014). Digital Fundamentals (11th ed.). Pearson Education (US). https://ecpi.vitalsource.com/books/9780133524390
(2017) National Instruments Multisim (V 14.1) [Windows]. Retrieved from http://www.ni.com/multisim/
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