![]() Inputs of the decoder are connected to the switches which are connected to the V CC. All the cathodes are connected together to the ground. In the circuit diagram shown below all the anodes are connected to seven output pins of the BCD decoder via resistors ranging between 390 ohms to 750 ohms. These ICs are commonly used to convert signals automatically that can be displayed on the seven segment. The output of driver integrated circuit is approximately equal to 25 mA of current to drive the led segment which makes it best for all colored LEDs. The decoder takes these four bits and convert them to 7 bits to produce the desired decimal digit to display on the seven segment. The four side input is named as A, B, C and D. The BCD to seven segment display decoder or driver takes 4 inputs and produces 7 outputs. To turn off the all the LEDs of the display It is 16 pin IC whose pinout is given below. This IC is mainly used for driving various types of displays like seven segment and incandescent displays. It can take input voltage varying from 3 volts to 18 volts. It has properties of low power dissipation and high noise reduction and capable of giving 25 mA output current. CD4711 is made from CMOS logic and the NPN transistor based output devices.
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