Computational Thinking 10 - NAND Rules The World
Paul S. Wang, Ph.D.
Digital computers are logic machines. They use bits to store information. A bit is nothing but a switch with two states, on and off. In computer speak, we use 1 to represent the on state, 0 the off state. In logic speak, 1 is called true, and 0 false. Combining the two, a bit can either be in the state on/1/true or in the state off/0/false. In other words, inside the computer 1 means true and 0 means false.