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Digital Electronics (3CS3-04)

(3CS3
ZERO LECTURE

Presented By :
RAJ KUMAR JAIN
Assistant Professor
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DEPT. OF Computer Enginee
  3CS3-04 – DIGITAL ELECTRONICS
 4 Hours in a Week

 Credit is 3

 Internal Marks- 30

 External Marks- 120

 Total Marks -150

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 SYLLABUS

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 CO’s(Course Outcomes)
1. Demonstrate number system and it's Application
2. Apply the knowledge of various logic gates in digital circuit.
3. Analyze the various logic families and Interfacing between digital and
analog components.
4. Design various combinational and sequential circuits using various
metrics: switching speed, throughput, gate count, energy dissipation and
power.

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 PO’s(Program Outcomes)
Apply the knowledge of mathematics, science, engineering fundamentals, and an engineering
pecialization to the solution of complex engineering problems.
problems
Identify, formulate, review research literature, and analyze complex engineering problems reaching
substantiated conclusions using first principles of mathematics, natural sciences, and engineering sciences
Design solutions for complex engineering problems and design system components or processes that meet the
specified needs with appropriate consideration for the public health and safety, and the cultural, societal, and
environmental considerations.
Use research-based knowledge and research methods including design of experiments, analysis and
interpretation of data, and synthesis of the information to provide valid conclusions.
Create, select, and apply appropriate techniques, resources, and modern engineering and IT tools including
prediction and modeling to complex engineering activities with an understanding of the limitations.
Apply reasoning informed by the contextual knowledge to assess societal, health, safety, legal and cultural
issues and the consequent responsibilities relevant to the professional engineering practice.

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 Continue……
Understand the impact of the professional engineering solutions in societal and environmental
ontexts, and demonstrate the knowledge of, and need for sustainable development.
Apply ethical principles and commit to professional ethics and responsibilities and norms of the
ngineering practice.
unction effectively as an individual, and as a member or leader in diverse teams, and in
multidisciplinary settings.
0. Communicate effectively on complex engineering activities with the engineering community and
with society at large, such as, being able to comprehend and write effective reports and design
ocumentation, make effective presentations, and give and receive clear instructions.
1. Demonstrate knowledge and understanding of the engineering and management principles and
pply these to one’s own work, as a member and leader in a team, to manage projects and in
multidisciplinary environments.
2. Recognize the need for, and have the preparation and ability to engage in independent and life-
ong learning in the broadest context of technological change.

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 PSO’s (Program Specific Outcomes)
SO-1
understand and apply knowledge of mathematics, system analysis & design, Data Modelling, Cloud
chnology, and latest tools to develop computer based solutions in the areas of system software, Multimedia,
eb Applications, Big data analytics, IOT, Business Intelligence and Networking systems.

SO-2

understand the evolutionary changes in computing, apply standards and ethical practices in project
velopment using latest tools & Technologies to solve societal problems and meet the challenges of the
ure.

SO-3

employ modern computing tools and platforms to be an entrepreneur, lifelong learning and higher studies.

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 Mapping B/w LO’s and PO’s
P PO PO PO PO PO PO PO PO PO PO PO PS PS PS
O 2 3 4 5 6 7 8 9 10 11 12 o1 o2 o3
1
CO1 - 2 - - - - - - - - -
- 2 - -

CO2 - - 2 - - - - - - - -
- 2 - -

CO3 - - - - 1 - - - - - -
- 1 - -

CO4 - - - - - - 2 - - - -
- 2 - -

Enter correlation levels 1, 2, or 3 as defined below:

Slight (Low) 2.Moderate (Medium) 3. Substantial (High)
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ntroduction to Digital Electronics

igital electronics is a branch of electronics which deals with digital format of data and codes.

gital stand for digit, digital electronics basically has two conditions which are possible, 0 (low logic) and
(high logic).

igital electronic systems use a digital signal that are composed of mathematical features to work.
1" as true and "0" as false are called bit and the group of bits are named byte.
Digital electronic circuits are usually made from large assemblies of logic gates.

Digital describes electronic technology that generates, stores, and processes data in terms of two states: 1 and
number 0.

modem is used to convert the digital information in your computer to analog signals for your device and to
onvert analog signals to digital information for your computer.
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igital Electronics Quick History

Prior to digital technology, electronic transmission was limited to analog technology, which conveys data
electronic signals of varying frequency or amplitude.

n the 1930's the prototypes of the computer were constructed from

mechanical switches ( vacuum tubes ) and relays. These were
comparatively slow, large, produced a great deal of heat.
heat

The next stage in the 1940's was the use of electronic-

diodes, and while these were better but they were unreliable.
unreliable

The next stage was the result of the development in 1947 of the transistor
which was much smaller, faster and cooler. Simple transistors were
replaced by integrated circuits and that got smaller and smaller and finally
deposited silicon to be put into a "chip".

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nalog Versus Digital

nalog = Continuous waves

igital = Discrete waves

Example:
An analog clock, whose hands move smoothly and continuously.
A digital clock, whose digits jump from one value to the next.
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 nalog Quantities
Most natural quantities (such as temperature, pressure, light intensity, …) are analog
uantities that vary continuously.

Digital systems can process, store, and transmit data more efficiently but can only assign separate
values to each point.

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 nalog and Digital Systems

Many systems use a maximum of analog and digital electronics to take advantage of each technology.

xample: A typical CD player accepts digital data from the CD drive and converts it to an analo
gnal for amplification.

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nalog to Digital Conversion

ough some signals are originally digital. A continuous

l can be first converted to a proportional voltage
form by a suitable transducer, the analogue signal is
ated, and then for adapting digital processor, the signal
o be converted into digital form. The diagrams shows
nalogue signal and its digital signal. The upper is the
gue signal and the lower is the digital signal.

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he Digital Revolution
tly, many types of devices have been converted from analog to digital.

of these digital devices, info is processed, transmitted and received as long strings
and 0s.
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 Advantages of Digital Electronics

Computer-controlled digital systems can be controlled by software, allowing new

functions to be added without changing hardware.
hardware
Information storage can be easier in digital systems than in analog ones.
The noise-immunity of digital systems permits data to be stored and retrieved without
noise.
In a digital system are easier to design and more precise representation of a signal can be
obtained by using more binary digits to represent it.
More digital circuitry can be fabricated on IC chips.
chips
Error management method can be inserted into the signal path. To detect errors, and then
either correct the errors, or at least ask for a new copy of the data.
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isadvantages of Digital Electronics

onversion to digital format and re-conversion to analog format is needed, which

ways include the lost of information.

n some cases, digital circuits use more energy than analog circuits and produce
ore heat and need heat sinks.
igital circuits are sometimes more
xpensive, especially in small
uantities.

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 Reference Books
S. No. Title of Book Authors Publisher

Text Books
1. Digital Logic and Computer Design M. Morris Mano Pearson

2. Herbert Taub,
Taub Donald L. TMH
Digital integrated electronics
Schilling
Reference Books
1. Digital Electronics: Principles and Anil K. Maini Wiley

Integrated Circuits
2. Fundamentals of Digital circuits A. Anand kumar PHI

Websites related to subject

1 https://nptel.ac.in/courses/108/105/108105132
108105132/
2. https://nptel.ac.in/courses/117/106/117106086
117106086/
3 https://nptel.ac.in/courses/108/105/108105113
108105113/
4.
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https://nptel.ac.in/courses/117/103/117103064
117103064/ 7/11/2020 18
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