Students often faces difficulties in figuring out the pins of seven segment displays.This module features a 4 digit, Red, Common Cathode 7 segment display with all necessery pinouts. All pins that are needed to glow a particular segement and digit are clearly marked which saves your time and labour.
Note: In this module the common pins of the four digits of the 7 segment are switched by four NPN transistors. So, you have to give logic 1 to D1-D4 pins to make the corresponding digit glow.
