ABSTRACT
This chapter discusses the basic of seven segment display and its features. It also discusses the interfacing of seven segment display with 8051 and NuttyFi with the help of circuit diagram and programming. A seven-segment display is an electronic device, which can be used to display decimal numeric values. Functional numerical displays (FND) can be employed in digital clocks, basic calculators, electronic meters, and different electronic devices that show numerical data. Every light-emitting diode has two connecting pins, one known as the “Anode” and other as the “Cathode”. Seven segment displays can be categorized in two types—common cathode and common anode. Common anode has all the anode of the seven segments connected directly to power and the common cathode has all the cathode are connected to the ground.
