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 | | Computer Peripherals: Accelerate the Performance of Your PCHowever in a mixed opinion, some people say, internal devices like the video capture cards are not really computer peripherals since they are added inside the computer case. In their opinion the term peripherals is exclusively reserved for devices that are hooked up externally to the computer. It is arguable however whether PCMCIA cards qualify as peripherals under this biased definition. Because there are some hard wares that go fully inside the laptop, while some others like WiFi cards, have external appendages.
Due to these deliberations, the term is hardly used these days. Earlier these were used to refer to things like floppy disk drives and modems. Now a days most of these devices are integrated inside the computer's case. Over and above the external devices typically function on their own such as mp3 players and cell phones.
The common peripherals include.
Storage: CD, CD ROM, CD writer, DVD, DVD ROM, DVD writer, HD DVD, HD DVD ROM, HD DVD Writer, etc. Other examples in this category include USB flash drive, tape drive, floppy disk, and punch card. In the non removable category are the disk drives, disk array controller, etc.
Input: In this category devices like keyboard, pointing devices, mouse, trackball, joystick, touch screen, game pad are included.
The devices like the power cord/ transformer, microphone, brain computer interface, image scanner, computer terminal, computer speech recognition, webcam, digitizing tablet, barcode reader are also included in this category.
Output: For the printing purposes the devices that are used like the plotter, printer, Braille embosser, etc, the devices for the sound like the computer speech synthesis, sound card, speakers, etc are the output peripherals.
The devices for the visuals like the digital camera, graphics card, monitor, the devices for networking like the modem and the network card, expansion devices like the docking station, etc are other output peripheral devices.
Manyonline computer shopping, portals are giving discount on every purchase of computer peripheral item.
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| The Hundred-Year Lie: How to Protect Yourself from the Chemicals That Are Destroying Your Health
by Randall Fitzgerald |  | In the tradition of Silent Spring and Fast Food Nation, investigative journalist Randall Fitzgerald warns how thousands of man-made chemicals in our food, water, medicine, and environment are making humans the most polluted species on the planet. A century ago in 1906, when Congress enacted the Pure Food and Drug Act, Americans were promised "better living through chemistry." Fitzgerald provides overwhelming evidence to shatter this myth, and many others perpetrated by the chemical, pharmaceutical, and processed foods industries.
Plume (June 26, 2007)
Product Dimensions: 8.4 x 5.2 x 0.7 inches
Paperback: 304 pages | Consider This:- The average American carries a "body burden" of 700 synthetic chemicals
- Chemicals in tap water can cause reproductive abnormalities and hermaphroditic birth
- A 2005 study of lactating women in eighteen U.S. states found perchlorate (a toxic component of rocket fuel) in practically every mother's breast milk
- Lab tests have found that four common food additives-aspartame, MSG, and two coloring chemicals-interact synergistically to produce nerve damage. These additives are commonly found in junk food marketed to children.
- In the past few decades male sperm counts fell by 50 percent, women's tubal pregnancies increased by 400 percent, and girls eight years old and younger began experiencing puberty. Chemicals are redefining what is "normal"
| Editorial Review:
In 1906, Congress passed the US Food and Drug Act and, according to the author, this has led to the "Hundred-Year Lie" that our food and drugs have been investigated and are safe and that the additives and chemicals put in them may actually make them better than the organic, natural variety. As an investigative reporter, Fitzgerald is expert at using scientific documents, articles in science and environmental journals and expert interviews to support his case. He concludes that we cannot rely on the government, science or manufacturers to either protect us or predict the effects of the products we ingest. As a test, Fitzgerald had his own blood analyzed for toxins and, in spite of living in an area of California known for its pure water and air and careful eating habits, he was shocked to find many toxic chemicals in his blood. While many readers will not agree with his conclusion that "Merely by choosing a diet of pure foods and a lifestyle free of synthetics, we can detoxify ourselves and initiate the healing of many degenerative illnesses and diseases," this book will cause any reader to think about the effect of our own voluntary actions on the health of our bodies. His suggestions for practical steps one can take may prove useful as well, although in the paperback afterword, he fears that denial will prevent most people or governments from taking any significant action.
Reviewer: Nola Theiss (Vol. 42, No. 1) |
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