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FIRST CIRCUIT
The first electric circuit was invented by Alessandro Volta in 1800. He discovered he could produce a steady flow of electricity using bowls of salt solution connected by metal strips.
https://www.google.es/search?q=FIRST+ELECTRIC+CIRCUIT&rlz=1C1GGRV_enES920ES920&oq=FIRST+ELECTRIC+CIRCUIT&aqs=chrome..69i57.10039j0j1&sourceid=chrome&ie=UTF-8 -
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The first Phone
While Italian innovator Antonio Meucci (pictured at left) is credited with inventing the first basic phone in 1849, and Frenchman Charles Bourseul devised a phone in 1854, Alexander Graham Bell won the first U.S. patent for the device in 1876.
https://www.elon.edu/e-web/predictions/150/1870.xhtml -
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First MobilePhone
The first mobile phone call was made 40 years today, on April 3, 1973, by Motorola employee Martin Cooper. Using a prototype of what would become the Motorola DynaTAC 8000x, the world's first commercial cell phone,https://www.theatlantic.com/technology/archive/2013/04/the-first-mobile-phone-call-was-made-40-years-ago-today/274611/ -
TOUCHPAD
The first touch pad was invented by George E. Gerpheide in 1988. Apple Computer was the first to license and use the touch pad in its Powerbook laptops in 1994. The touch pad has since become the leading cursor controlling device in laptops. -
