If your introduction to digital electronics came more years ago than you’d care to mention, the chances are you did so with 5V TTL logic. Above 2V but usually pretty close to 5V is a logic 1, below ...
In 1996, the mathematical logician George Boolos (above) published a paper describing “the hardest logic puzzle ever” which he attributed to the logician Raymond Smullyan. The puzzle has gained much ...
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