A 7-segment display is an electronic display device that shows decimal numbers using seven light emitting segments (a, b, c, d, e, f, g) arranged in a specific pattern. There are two types: common cathode displays where the segments are joined to ground and illuminated by a high signal to each anode, and common anode displays where the anodes are joined to power and segments are illuminated by a low signal to each cathode. 7-segment displays are widely used in digital clocks, meters, calculators and other devices to display numerical information.

1. 7-Segment Display
Prepared by: Shabang k.Mohammd
Supervisor: Mr.karwan Mahdi

2. What is a 7-segment Display?
• A seven-segment display(SSD) OR seven- segment
indicator, is a form of electronic display device of
displaying decimal numerals that is an
alternative to the more complex dot matrix
displays.
• Seven-segment display are widely used in digital
clock, electronic meters, basic calculator , and
other electronic device display numerical
information.

3. Types of 7-segmet display :
1. Common cathode (CC): the common cathode
display, connection of the LED segments are
joined together to logic “o” or ground . The
individual segment are illuminated by
application of a “high” ,or logic “1” signal via a
current limiting resistor to forward bias the
individual anode terminals (a-g).

5. 2. Common Anode(CA): in the common
anode display ,all the anode connection of
the LED segment are joined together to
logic “1”.the individual segment are
illuminated by applying a ground logic
“o”or “LOW” signal via a suitable common
limiting resistor to cathode of the
particular segment (a-g)

7. Digit drive pattern

8. Thankyou