The 4-Digit 7-Segment Display is a self-contained module containing four 7-segment LED numeric displays. This module is a very simple common cathode display can easily interface with any microcontroller development board.

Features of 4 Digit Seven Segment Display Board (Common Cathode):

• 4 multiplexed displays.
• Easy to interface..
• Long lasting..
• Operating voltage-3v to 5v.
• Applications of 4 Digit Seven Segment Display Board (Common Cathode):
• GSM based digital notice board..
• Password based door lock system.
• RF based employee counter.
• DIY projects with 4 digit numeric display.