Hello Sougata,

Thanks for your code (I copied/pasted it without any change and worked!!!). Unfortunately, the Led0 is still blinking.

I made a code (also based on the Tips & Tricks) very similar to yours and had the same result.

As one can multiplex 6 Leds with only 3 pins, I thought I could do something similar with buttons on 1 port.

After a lots of trials, I think it is not feasable... or I still miss something.

As already said, I don't care about the Z state. Only both "0" and "1" states would be used.