In this video I show you a device called Turing Tumble that is an actual working computer with real logic. I show you how it can count, add, subtract and even multiply. I talk about how computers can do simple things very fast.
Can you make a general purpose CPU with just one instruction? Sure! SUBLEQ is an example of a One Instruction Set Computer (OISC). The ultimate RISC machine where the number of instructions has been reduced to 1!