Scanners: softening up hard copies

Article Abstract:

Scanners use illuminate the original image, then using mirrors and lenses, reflect the image into an array of charge coupled devices. These convert the various light intensities to voltages, which in turn pass through a chip, where they are changed to the 1's and 0's that computer software understands. Flatbed scanners remain the best means of scanning a wide variety of originals. Sheet-fed scanners are more compact, but for the best reproduction, the original document is limited to sheet-size. A typical scanner costs $100. Most scanners sold today are purchased for home use.

Science & research, Computer peripheral equipment, not elsewhere classified, Other Computer Peripheral Equipment Manufacturing, Keypunch Devices, Product information, Computer peripherals industry, Image scanner, Image scanners

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How pagers receive messages, even 07734 ('hello' upside down)

Article Abstract:

Pagers continue to evolve into a two-way communication system. Users can now receive messages via voice phone, e-mail or another pager, and reply in any of those formats as well. There are about 155 mil pagers worldwide (15% of US teenagers carry one). At Skytel, the two-way segment of the market grew 170% in 1998; one-way, 7%. Traffic via the Internet per month was 500,000 in 1997. In 1999, it is running 5.2 mil per month. Media services are supplying weather and stock info via pagers. The SkyTel network has 3,400 receiving towers and about 900 transmitting towers in the US.

Radio & TV communications equipment, Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing, Services information, Paging Systems, Equipment and supplies, Radio pagers, Pagers (Communication devices), Paging technology

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This New Year's Eve, technology will drop the ball

Article Abstract:

The mirror ball in Time Square is connected by computer and satellite to the U.S. atomic clock in Boulder, CO. The system uses this time to regulate the descent of the ball, set off fireworks, and start a light show at a Broadway stage exactly at midnight. The ball has nearly 700 lights mounted on an aluminum frame.

Statistical Data Included, New Year, Design and construction, Technology application, Illustration, Rites, ceremonies and celebrations, Times Square, Architectural and decorative lighting, Decorative lighting, New Year decorations, etc., Holiday decorations

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