Communication is the sharing of information. It is the power to create in the minds of others, feelings or information that you want them to have. It is the need to communicate that has given rise to speech, language, alphabets, and writing. The same need led to the invention of paper, printing presses, typewriters, and finally computers and the internet. The power to communicate in depth has allowed humans to dominate earth. The fast development of the same power has allowed human technological evolution to overtake biological and social evolution. There are three principal needs of communication. The need to communicate in presence of the receiver gave rise to speech and language. The need to communicate in one’s absence gave rise to alphabet, writing, paper, printing press, all kinds of recording devices, and finally the modern day computer with its features. The need to communicate over a distance included everything that one needed to communicate in one’s absence, but also gave rise to signals, telegraph, telephone, the postal system and the internet.