Living in the modern digital world has benefits but along with the benefits of computer and mobile technology, we are also acquiring permanent health problems. Just like Air borne and Water borne diseases, computer and mobile phone related illness is also increasing.
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The easiest way to connect computer peripherals is through a Universal Serial Bus. The USB is a plug-and-play interface between the PC and the peripherals. The advantage of USB is that the device can be plugged in or plugged out without the need of restarting the PC. Here explains the working of USB.
USB is the short form of Universal Serial Bus, a standard port that helps to connect computer peripherals like scanner, printer, digital camera, flash drive and more to the Computer. The USB standard supports the data transfer at the rate of 12 Mbps.
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This is my circuit published in Electronic For You September 2009 issue. This circuit detects the Range of Electronic Smog emanating from the CRT monitor of the Computer.This circuit helps to assess the range of radiation from the monitor through LED indications.Pulsations of PEMR ( Pulsed Electro Magnetic Radiation) can be visualized through the flashing of LEDs.Circuit diagram and description as images.Click on the images to see enlarged view.
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Electromagnetic waves are emitted by many natural and man made sources and play an important part in our lives. We are warmed by the electromagnetic emissions of the sun and we see using the part of the electromagnetic spectrum that our eyes detect as visible light. When you sit in front of a computer or television, you are being bombarded by harmful waves quietly emanating from it. Even if you turn off the device, your biomagnetic field is still bombarded 24 hours a day, 7 days a week by the EM radiations from power cables, electric and electronic instruments.
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A Compact Disc (CD) is an optical disc used to store digital data. CD-ROMs and CD-Rs remain widely used technologies in the computer industry.CD-ROM drives employ a near-infrared 780 nm laser diode. The laser beam is directed onto the disc via an opto-electronic tracking module, which then detects whether the beam has been reflected or scattered.
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