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Chapter 10.3 - Interfacing 7 Segment(Common Anode) LED Display with 8051 Microcontroller on Breadboard - Circuit Diagram


Above is the circuit diagram of Interfacing 7 Segment(Common Anode) LED Display with 8051 Microcontroller on Breadboard. As you can see we have got rid of L293D motor driver IC and used a common anode 7 segment LED display. As you can see from the image, the pin no 3 and 8 are connected to VCC lane of breadboard, and rest of the connections are given below :

P2.0<-->A
P2.1<-->B
P2.2<-->C
P2.3<-->D
P2.4<-->E
P2.5<-->F
P2.6<-->G
P2.7<-->DP

Here is the pinout of both common anode and common cathode LED display. We are using common anode in this tutorial:


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