SE Mini Project 1A
Oral Exam (Semester III)
Vivekanand Education Society’s Institute of Technology
Electronics and Telecommunication Engineering
Name of Guide : Mr.Mrugendra Vasmatkar
Designation : Assistant Professor (EXTC)
Title of Project – Devanagari Script Encoder
Group No. : B7
1. Renu Dharamkar - 14 (D9B)
2. Atharva Dharmadhikari – 15 (D9B)
3. Anuraag Rao – 46 (D9B)
4. Aman Yadav - 59 (D9B)
1
Contents to be covered
● Problem Statement
● Proposed Solution
● Literature Survey
● Competitions/Research Gaps
● Complete Block Diagram of Proposed System
● Components requirement
● Time Chart
● Publication oriented/ Patent oriented/ National level project competition oriented
● References
2
Problem Statement
We all know that the basics for learning any language is its alphabets , so it is necessary
to know the alphabets and its pronunciation perfect.Children in rural or undeveloped
areas, do not have fitting facilities to learn pronunciation of alphabets, also there are not
appropriate teaching method which in turn leads children uneducated even about the
languages.These days there are educational toys for kids to help them learn, but most of
these are for English alphabets and no such things are available for Devanagari script,
due to which kids nowadays are very much unaware of the Devanagari script.
3
Literature Survey
Sr.
No.
Title
of
Technical
paper
Name of
Author
Year
of
publication
Name
Journal
1
Keylekh:
A
for
keyboard
text entry in
Indic scripts
Anirudh
Joshi,
Vikram
Parmar,
Gaurav
Mathur
2004
Design of high
16:4
speed
priority encoder
Gopi
Vetapalem,
K ishore
Prabhala,
Ch. Anil
Babu
2020
2.
of
Methodology
Results/
conclusions
Drawbacks/
limitations
A
conference
paper on Indic
script keyboard.
Keyboards were originally
designed to input text in
roman scrips. This was
designed to create a
natural C-v sequence for
the user where they can
type a consonant followed
by the vowel
Keylekh[6]
could
achieve its primary
design objective to
make typing in Indic
language easy to use
and easy to learn
specially for children
with age 2-5 years
. instruction seemed
to easy to remember
Three
issues
related to Indian
languages pose for
the design of input
devices.
1. Structure
of
Indic Scripts.
2. Large number
of characters
JETIR research
journal @2020
of
The
functionality
Encoder[1] is to convert
into code from a set of
input signal, The encoder
has a main role Based on
the logical expressions by
taking n inputs where is
normally 4,8,16 where
data m is usally binary
code indicate the forced
input.
The encoders is one
of
the
crucial
components in many
applications so it is
efficient in terms of its
design metrics then it
will help in improving
efficiency of entire
design.
The main issue is
encoder
generates an error
output when more
than one input is
high.
4
Research Gap
Identifying Research Gaps in “Devanagari Script Encoder” there was a minor discrepancy
in connection of components with each other while designing the PCB.
The paper also defines that a research gap rises in, as the main issue is encoder
generates an error output when more than one input is high and the issues which Indian
and regional languages pose for the design of input devices.
1. Structure of Indic Scripts.
2. Large number of characters
5
Proposed Solution
•
In order to inculcate the pronunciations of the alphabets in children, there are various
ways, one among them is our self-made DEVANAGARI ROBOT.
•
This device will currently work as regional language script encoder[1], but in later upgrades
this will be modified to DEVANAGARI version of text to speech robot [2]as end result. This
will provide audio support to enhance the pronunciation on entering VARNA using
keyboard.[3]
•
As far as script encoder is concerned it will work similar to the morse code encode. Each
individual VARNA is represented as for 3 bit binary code [4]. For reference the index is
attached.
•
This code will further be forwarded to audio device which will pronounce the respective
VARNA.[5]
6
Fig 1. Index
7
Comparison/competition in the market
•
•
•
•
The main aim of our project is that it should help the children to learn their regional
language through attractive toys.
These comes under educational toys .The market of educational toys and specially of those
which help the children to learn English alphabet is very vast.
Based on the age group the market is categorized into 0-4 years,4-8 years, and above 8
years. The 0-4 years segment is forecast to dominate the market over the forecast period.
The increasing need to boost children intelligence quotient from a tender age is surging the
demand for these toys in these segment.
8
Block Diagram
Fig 2. Block Diagram
9
Circuit
Fig 3. Circuit Diagram
10
Video of simulation on Eagle Software
11
8×3 Encoder IC truth table
12
Components required
Sr
no.
Name of components
Quantity
Cost in
rupees
1. IC 74148
7
210
2. IC 7404
1
25
3. Push buttons
48
96
4. LED
21
42
Total cost : 373
13
RESULTS/IMPLENTATION
14
Time Chart
15
[1]
[2]
References
“74148 pdf, 74148 Description, 74148 Datasheet, 74148 viewꢀ ::: ALLDATASHEETꢀ :::” https://pdf1.alldatasheet.com/datasheetpdf/view/27389/TI/74148.html (accessed Nov. 04, 2022).
“CD4028B data sheet, product information and support | TI.com.” https://www.ti.com/product/CD4028B (accessed Nov. 06,
2022).
[3]
“KB910 datasheet.” https://datasheetspdf.com/pdf-file/774304/Fujitsu/KB910/1 (accessed Nov. 04, 2022).
[4]
“ResearchGate.”
[5]
[6]
https://www.researchgate.net/publication/334672437_Speech_Recognition_for_Robotic_Control/link/5d3995454585153e591fbc6
b/download (accessed Nov. 06, 2022).
O. Tirosh, A. Lansing, C. Todd, D. Laboratories, R. Zimmermann, and L. G. Knapen, “Scope of This Release Revision History
Revision Date Filename Author Description,” 1998.
“Keylekh 1 keyboard made by using plastic parts from a commercially... | Download Scientific Diagram.”
https://www.researchgate.net/figure/Keylekh-1-keyboard-made-by-using-plastic-parts-from-a-commercially-available-
QWERTY_fig3_221516944 (accessed Nov. 06, 2022).
16
17