I have a 4 gray code inputs and want to feed it to seven segment display using micro controller .
Can anyone suggest how to proceed.
thank you

 

http://pic-microcontroller.com/interfacing-7-segment-display-pic16f877-microcontroller/

 

http://www.microchip.com/forums/m96826.aspx

 

4 inputs = 16 states. I would use the raw Gray code as an index into a 16 character array of segment patterns. No other fancy translation required.

 

4 inputs = 16 states. I would use the raw Gray code as an index into a 16 character array of segment patterns. No other fancy translation required.

OK
But how to convert it into 7 segment
patterns using look up table In micro controller programming or with some digital ic????

 

But how to convert it into 7 segment

You just generate a 10 entry table in the micro memory to map the Gray code into the 7 segment signals needed for a 0 to 9 display.
Fore example for a Gray code of 3 you would convert 0010 to ABCDG (7-segment 3).

 

Like @crutschow says except sort the table on the raw gray code value so that it provides a direct index into the segment patterns for each digit.
The PDF shows how I would do it - a Gray to 7 segment decoder.

 

You just generate a 10 entry table in the micro memory to map the Gray code into the 7 segment signals needed for a 0 to 9 display.
Fore example for a Gray code of 3 you would convert 0010 to ABCDG (7-segment 3).

View attachment 135071

OK
I thought do it like that but wasn't sure to do it or not.I will try to stimulate now

 

Like @crutschow says except sort the table on the raw gray code value so that it provides a direct index into the segment patterns for each digit.
The PDF shows how I would do it - a Gray to 7 segment decoder.

Thank you for you response
I will try to stimulate this