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Mindstorms brick has a dim display

The LCD display on my Mindstorms brick (microprocessor) is very dim. It is not just a low battery; I've plugged it into an AC adapter. Anybody encounter this problem? I will post a picture of the ...
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Is is possible to build a decimal to binary converter (binary counter) with lego?

I have seen many papers on logic gates build with lego but I want to make a decimal to binary converter. There should be a counter as an input, with each press of the counter, the output 8 block ...