Arduino UNO Interfacing Seven Segment LED

Seven segment leds are common display devices are used to display integer values and controlled by microcontroller may be any like 8051, PIC, Atmel avr etc. There are two types of seven segment leds, one is common cathode and another is common anode, we use this with Arduino with seven segment as per our need what kind of circuitry we have could be common anode and common cathode. How to integrate Arduino with seven segment led, this article is focusing on this topic. We will explore example with live demo, which will explain the entire circuit and components