The central processing unit lies at the heart of every computer, a vast collection of microscopically small switches and logic-gates. Now, through the power of paper we bring you those same logic gates in goat form.
Presented here is the and-goat, the goat will nod his head only in you press the right button AND the left button.
Download the model, print it onto thin card then cut out and assemble following the clear, fully illustrated instructions. You'll need some small coins to act as weights, PVA glue ( white school glue), scissors, ruler and a sharp knife.