Transistors are microscopic electronic switches that turn on and off billions of times a second. it's hard to believe that basically that is all a computer does - It's either says Yes or No. To process the words, images and sounds we use every day, computers and other devices(such as CD players) transform these communications into a simple code that uses the numerals 0 and 1 to repersent the on and off states of a transistor. This language of 0s and 1s is known as digital information.