[Phillip] wanted to play with the C preprocessor. He decided to do that by creating a 4 bit full adder. We know this is pretty useless in everyday life, but it was a great learning experience. The ...

Hi, first post here, this place has really come in handy a few times. Anyway, heres my question: I want to connect two 4 bit adders together (school related) in order to make it an 8 bit adder. Here's ...

Most of us can do simple math in our heads, but some people just can’t seem to add two numbers between 0 and 3 without using paper, like [Aliaksei Zholner] does with his fluidic adder circuit built ...