The document discusses seven-segment decoders, which are logic circuits used to display decimal numbers and some characters by activating specific outputs based on input binary numbers. It explains the configurations of common anode and common cathode displays, detailing how they function under different voltage conditions. Additionally, it provides examples of displayed values and mentions the capability to show decimal digits and simple messages.

1. WELCOME
TO
OUR PRESENTATION
Seven Segment
Decoders

2. A decoder is a logic circuit that accepts a set of inputs
that represents a binary number and activates only
the output that corresponds to that input number.

3.  A seven-segment decoders can be used to display the
decimal numbers 0-9 and some alpha characters.
 A common anode seven-segment decoders works.

4. HERE,
The circuit of
Seven Segment
circuit. By this
picture we can
realize that how it
work in only 7
segment by
different ways.

5.  A Seven-Segment Display (SSD) is simply a figure eight
grouping of LEDs {some include a decimal point (DP)}.
 Each Segment is labeled (a) thru (g).
 SSDs are available in two configurations
 Common Cathode (all LED cathodes are connected)
 Common Anode (all LED anodes are connected)
a
b
c
d
e
g
dp
f

6. Example
What value would be displayed in the common
anode seven-segment display shown?
Solution
Common Anode:
• 0 volts = Segment On
• b, c, f, & g
• 5 volts = Segment Off
• a, d, & e
a
b
c
d
e
f g

7. 7
Example
What value would be displayed in the common
cathode seven-segment display shown?
Solution
Common Cathode:
• 5 volts = Segment On
• a, b, d, e, & g
• 0 volts = Segment Off
• c & f
a
b
c
d
e
f g

8. OUTPUT EXAMPLE:

9. Decimal Digits 0-9
Select Alpha Characters
Simple Messages

10. ………
…………..
GOOD
BYE
&
THANK YOU….