1838 – Alfred Vail demonstrated a telegraph system using dots and dashes (this is the forerunner of Morse code).
1954 – The Duoscopic TV receiver was unveiled. The TV set allowed a person or group to watch two different shows at the same time. It was a primitive, picture-in-picture, split-screen that was tested in New York City and Chicago.
2007 – Apple CEO Steve Jobs introduces the original iPhone at a Macworld keynote in San Francisco. It was the first time a single device combined a music player, telephone and mobile internet communicator. Up to that point, the Blackberry was king. Apple changed all that and paved the way for countless other smartphones that most of us can now, not live without.