Design a circuit connecting a binary coded decimal seven segment display to PIC 16F877A Microcontroller.

Today we are going to write a c program to display numbers from 0 to 9 automatically in the ascending and descending order on a circuit connecting a binary coded decimal seven segment display to PIC 16F877A Microcontroller.

I would like to explain it in two different ways. First let’s discuss the hardest way of doing it. :D Let’s think unfortunately you have created your circuit as below.

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You can use an array and for loop to reduce the amount of codes. So shall we learn the easiest way of doing that? To do that you should create your circuit as below.

 

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As it’s very easy I will only demonstrate display numbers from 0 to 9 automatically in the ascending order.

 

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Below image will briefly explain what is meant by above code segment.

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Now you need to use binary to hexadecimal converter (http://www.binaryhexconverter.com/binary-to-hex-converter ) just convert the number you need to display into binary and then convert that binary number into hexadecimal.

Here I convert the number into binary to show the current flow of ports. Otherwise the number can be directly converted into a hexadecimal number.