Display 7 segments of the keyboard still shows a six

Hello, I am a student of renewable energy engineering and I have a problem with a circuit that I made. This circuit is composed on a 0-9 keyboard connected to a 74HC147, which is connected to a 4511BD, which is then connect to a red screen of seven segments with a common cathode.

The problem is that it doesn't matter which button on the keyboard I press on, the screen still shows a six.

I've ran out of ideas and I don't know why it does not work as it should.

I would be very grateful if someone could help me out, I'll let the ms11 here file. Thank you.

I already solved it, I just had to replace those no. buttons help NC buttons and had to add a few don't wear beside the 74147.
Thank you, however.

Tags: NI Software

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