2. 7 Segment to BCD Converter
Digital Logic design
Imran khan
Jabbar khan
Javed iqbal

3. Introduction
Actually, our project is a reverse project of BCD to 7-segment 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.

4. Block Diagram
Circuit A W b x C D y E F z G

5. Truth table

6. 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

7. Components used We have used seven components as follows.
7SEG-COM-CAT-GRN
TOGGLE
AND_7 GATE
NOT GATE
OR_3 GATE
OR_4 GATE
GROUND

8. Proteus circuit

9. 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

10. implementation
LED OFF mean 0
LED ON mean 1
Output image

11. Thank You