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Inventions

Inventions
In which decade were the first successful diode and triode vacuum tubes invented?

1800s
1900s
1890s
1880s

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Inventions
In which decade was the first solid state integrated circuit demonstrated?

1950s
1960s
1970s
1980s

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Inventions
What now-ubiquitous device was invented by Zenith engineer Eugene Polley in 1955?

VCR
Calculator
Microwave oven
Remote control

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Inventions
For what does the world owe Almon Strowger a debt of gratitude?

Automatic Telephone Exchanges
Parking Meters
Vending Machines
Traffic Lights

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Inventions
Who invented Gramophone?

Fahrenheit
Sir Alexander Graham Bell
Michael Faraday
Thomas Alva Edison

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Inventions
For over 500 years, paper was only available and sold as single sheets. In 1902, an inventive Australian used half size sheets of paper, a bit of glue and cardboard to create the what?

Calendar
Telephone Book
Notepad
Notice Board

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