what: cellular phone who: dr. martin cooper, a former general manager for the systems division at...
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TECHNOLOGY
Communication and Information
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Cellular Phone
What: Cellular PhoneWho: Dr. Martin Cooper, a former general manager for the systems
division at Motorola, is considered the inventor of the first portable handset and the first person to make a call on a portable cell phone in April 1973. The first call he made was to his rival, Joel Engel, Bell Labs head of research.
When: It was invented by a man named Martin Cooper in 1973 while he was working for Motorola.
Why: The cell phone was invented because military needed cell phones to communicate. Also, people could communicate from a long distance. Last, cell phones are easy to carry around.
Where: The first commercial mobile phone service was launched in Japan by NTT in 1978.
How: Its basic function is to allow people separated by large distances to talk to each other. You can also send messages in an instant. How: Its basic function is to allow people separated by large distances to talk to each other. You can also send messages in an instant.
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ComputerWhat: ComputerWho: John Presper Eckert & John W. Mauchly. They built the ENIAC
(Electronic Numerical Integrator and Computer) invented the computer first but Charles Babbage was the first person to introduce the idea of "programmable machines" of Cambridge, England invented his Analytical Machine in 1945.
When: The implementation of the design of what should have been the first computer was actually completed in 1989.
Why: The computer was invented to take the boring tedious work out of mathematics. Computers were also invented for industrial and entertainment purposes.
Where: Was invented in the US at the Rowayton Library in Norwalk, CT.
How: It is used to sequentially and automatically carry out a sequence of arithmetic or logical operations. The particular sequence of operations can be changed readily, allowing the computer to solve more than one kind of problem.
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Telephone
What: Telephone Who: The first telephone was invented by Alexander
Graham. He was the first to patent the telephone after experimenting with many primitive sound transmitters and receivers.
When: It was invented in the year 1875.Why: The telephone was invented so that everyone
could keep in touch even if you are in a faraway place.
Where: It was physically created his first telephone in Boston, Massachusetts
How: It is used to transmit and receives sound, most commonly the human voice.
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TelevisionWhat: TelevisionWho: John Logie Baird was a Scottish
engineer and inventor of the world's first practical, publicly demonstrated television system, and also the world's first fully electronic color television tube.
When: it was invented in the year 1927.Why: Television was invented for entertainment
purposes.Where: The first television was invented in America by
John Logie Baird and invented the first fully working TV system in the United Kingdom.
How: you can see and hear information or news from television.
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TelegraphWhat: Telegraph Who: The telegraph was invented by Samuel
Morse.When: It was invented in the year 1792.Why: To communicate over longer distances.Where: It was invented in Boston,
Massachusetts How: It is used to transmit and receive
messages over long distances, i.e., for telegraphy. The word "telegraph" alone now generally refers to an electrical telegraph.