Communication Technology: From Smoke Signals to Smartphones

Communication Technology: From Smoke Signals to Smartphones — page 1
Keeping in Touch People have always talked to each other from far away But they did not always have telephones They used different ways to get in touch with each other Smoke Signals Native Americans used smoke signals They built a fire on a hill They waved a wet blanket over the fire in patterns The smoke rose in the air People far away could read the patterns it made 4