7 SEGMENT TO BCD
CONVERTER
DIGITAL LOGIC DESIGN
• IMRAN KHAN
• JABBAR KHAN
• JAVED IQBAL
INTRODUCTION
Actually, our project is a reverse project of BCD to 7segment display. 7-segment consist of seven
individual named LED’s (called the segments) named
as A,B,C,D,E,F,G. A to G inputs combination will
produce any decimal from 0 to 9 number on 7
segment and project circuit will convert it into binary.
BLOCK DIAGRAM
A
B
C
D
E
F
G
W
X
Circuit
Y
Z
TRUTH TABLE
SIMPLIFICATION USING MINTERMS
W = abcdefg + abcde’fg
= abcdfg(e + e’)
=abcdfg(1)
 W =abcdfg
X = a’bcd’e’fg + ab’cde’fg + ab’cdefg + abcd’e’f’g’
=ab’cdfg(e + e’) + a’bcd’e’fg + abcd’e’f’g’
 X =ab’cdfg + a’bcd’e’fg + abcd’e’f’g’
 Y = abc’def’g + abcde’f’g + ab’cdefg + abcd’e’f’g’
Z = a’bcd’e’f’g’ + abcde’f’g + ab’cde’fg + abcd’e’f’g’ + abcde’fg
= bcd’e’f’g’(a + a’) + abcde’g(f + f’) + ab’cde’fg
 Z = bcd’e’f’g’+ abcde’g + ab’cde’fg
COMPONENTS USED
We have used seven components as follows.
1.
2.
3.
4.
5.
6.
7.
7SEG-COM-CAT-GRN
TOGGLE
AND_7 GATE
NOT GATE
OR_3 GATE
OR_4 GATE
GROUND
PROTEUS CIRCUIT
IMPLEMENTATION
• On 7-segment we will give combination of inputs
which will produce Hexadecimal number 0 to 9.
• lets have an example where Decimal 7 is produce
on 7-segment as an input & circuit will produce its
binary
• Input image
IMPLEMENTATION
• LED OFF mean 0
• LED ON mean 1
Output image
0
1
1
1
THANK YOU