Please excuse me for asking what might be a trivial question....but, How many of you have discovered that the data/software CD that contains computer programs and their instruction books these days, is quite fragile? Even if you don't break them, taking them out of their plastic boxes, have you found that the optical surface can be damaged with ease, and not last 100 days much less 100 years? That a speck of dirt, and possibly oil from the skin, can render them useless? Bill Lurie Gene wrote: > >Hi Ray, > >Good question! Now you got me searching. A search at www.amazon.com in >"electronics" for "optical discs" comes up with CD changers, CD's etc. > >I went to www.whatis.com and did a search for "optical discs". Search >result: > >An optical disc is an electronic data storage medium that can be written to >and read using a low-powered laser beam. Originally developed in the late >1960s, the first optical disc, created by James T. Russell, stored data as >micron-wide dots of light and dark. A laser read the dots, and the data was >converted to an electrical signal, and finally to audio or visual output. >However, the technology didn't appear in the marketplace until Philips and >Sony came out with the compact disc (CD) in 1982. Since then, there has been >a constant succession of optical disc formats, first in CD formats, followed >by a number of DVD formats. >Optical disc offers a number of advantages over magnetic storage media. An >optical disc holds much more data. The greater control and focus possible >with laser beams (in comparison to tiny magnetic heads) means that more data >can be written into a smaller space. Storage capacity increases with each >new generation of optical media. Emerging standards, such as Blu-ray, offer >up to 27 gigabytes (GB) on a single-sided 12-centimeter disc. In comparison, >a diskette, for example, can hold 1.44 megabytes (MB). Optical discs are >inexpensive to manufacture and data stored on them is relatively impervious >to most environmental threats, such as power surges, or magnetic >disturbances. > >http://searchstorage.techtarget.com/sDefinition/0,,sid5_gci811276,00.html >or: http://tinyurl.com/5nhr5 > > -:¦:- ¸.*´*´¨¨)) ¸.*´*´¨¨)) ¸.*´*´¨¨)) ¸.*´*´¨¨)) > ((¸¸.*´ ..*´ ((¸¸ Gene ((¸¸.*´ ..*´ ((¸¸.*´ ..*´ -:¦:- > -:¦:- A Technical Support Alliance, ITU & OWTA Charter Member > Build_A_Computer * Computer_Builders2 * ComputerSupport_2 > CHOL * EZ2Compute * ITU * Linspire * OWTA * PC-Technical > Pro_Tech * SkyMaps * TechSupportForDummies * WEMRM -:¦:- > IP address: 188.8.131.52 * ©2005 * http://tinyurl.com/4kaov -:¦:- > >----- Original Message ----- >From: "Ray" <Ray2047@xxxxxxxxx> >To: <24hoursupport@xxxxxxxxxxxxx> >Sent: Monday, February 07, 2005 7:21 PM >Subject: [24hoursupport] Re: The Myth Of The 100-Year CD-Rom > >Gene wrote: > > >>Hi Elizabeth, >> >>There are no dumb questions. Optical discs are CD's, DVD's etc. >> >>Which begs the queston why did the responder that raised the question in >>Elizabeth's mind say his company uses optical discs instead of CDs. A quick >>Google didn't offer any definite answer for me. >> >> > > > > For a web-based membership management utility and information on list policies, please see http://nibec.com/24hoursupport/ To unsubscribe, send a blank email to 24hoursupport-request@xxxxxxxxxxxxx with "unsubscribe" (without quotes) in the subject.