Interfacing
7 Segment display
Description: A
seven segment display consists of seven LEDs arranged in the form of a squarish
'8' slightly inclined to the right and a single LED as the dot character.
Different
characters can be displayed by selectively glowing the required LED segments.
Seven
segments are of two types
1
Common Cathode
2
Common Anode
In
common cathode type the cathode of all
LED are fixed together to a single
terminal which is called as 'com' and the cathode of all the LEDs are left
alone as individual pins labelled as a,b,c,d,e,f,g,h (or dot).
seven
segment displays are used to indicate numerical information . Seven segments
can range display digits from 0 to 9 and even can display few characters like
A,B,C,D,E,FG
etc
These
are very popular and have many more applications.
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