To demonstrate how computers work, [Alex Gorischek] has made a physical example of how binary logic gates work using pulleys and weights. For anyone who doesn’t know much about logic gates (W… ...

By chaining these gates together, Mould successfully constructs a system that can add 4-digit binary numbers, showcasing the versatility and universality of logic gate principles.

To demonstrate that it worked, the authors constructed a system that calculated the floor of the square root of a four-bit binary number. This required 74 different single-stranded molecules of ...