The presentation covers fundamental concepts in digital logic design, including truth tables, hexadecimal number systems, and binary-coded decimal (BCD). It explains how truth tables represent boolean expressions and how BCD encodes decimal numbers for digital displays. The document also describes the application of BCD in driving seven-segment displays used in various electronic devices.

1. PRESENTATION ON Digital Logic Design

2. Course Instructor
Md.Obaidur Rahman
Co-Ordinator
Department Of Computer Science & Engineering (CSE)
European University Of Bangladesh

3. Team Reboot
Members ID Task
01.Arafat Rahman Bappi
02.Plato Chakma
03.Ashraful Islam
04.Md.Ashiouzzaman
160121008
160121003
160121010
160121017
Introduction & Truth Table
BCD Code
Hexa-Decimal
BCD to 7 Sigment

4. 1.What is Truth Table ?
In digital logic design Truth Table is a kind of table which represents
boolean expressions (0,1) of a logic gate & with the help of Truth Table we
can find all the possible combination of a logic circuit & get a meaningful
output.
Example : For 2 bit’s AND gate the Truth Table
looks like below
Input Output
A B A.B
1 1 1
1 0 0
0 1 0
0 0 0
A
B
AB
2 bit’s AND gate
Truth Table

5. 2.What is Hexa-Decimal ?
Hexa-decimal is a number system where the base is 16 . There has 16
digit’s in hexa-decimal number system.
Example :
Binary Hexa-decimal
0 0
1 1
2 2
3 3
4 4
5 5
6 6

6. Decimal Hexa-decimal
7 7
8 8
9 9
10 A
11 B
12 C
13 D
14 E
15 F
Example :

7. 3.What is BCD code ?
BCD or Binary Coded Decimal is that number system or code which has the
binary numbers or digits to represent a decimal number (0-9).
Example :
Decimal BCD
0
1
10
0000
0001
0001 0000

8. 4.BCD to 7 segment
Most often seven-segment displays are used to display the digits in digital
watches, calculators, clocks, measuring instruments and digital counters,
etc.

9. BCD To 7 Segment

10. BCD To 7 Segment

11. THANKS TO ALL For Being Here with us…