History of Touch-Tone Telephones
Touch-tone dialing with a push-button keypad was first introduced in two towns outside of Pittsburgh on November 18, 1963. Each number had its own frequency and was decoded by a switching center to connect a call. It would be about two decades before push-button phones would catch on and become standard in households across America.
Tesla vs. Marconi: Who Invented Radio
Nikola Tesla gave a public demonstration of the wireless transmission of energy on March 1, 1893. ... more
1949's "Step-Saving" Kitchen
In 1949 the U.S. Department of Agriculture designed the “ideal kitchen.” The premise was ... more
