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I want to know how exactly does a CD-RW/DVD Combo work...I remember that it is single lens and there was a nice article in <a href="http://www.howstuffworks.com" rel="ugc">www.howstuffworks.com</a>. However I am unable to find the information on the website.Any answers will be appreciated and anything which supplements to the answer provided by weblinks such as howstuffworks.com will be highly appreciated.
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I want to know how exactly does a CD-RW/DVD Combo work...I remember that it is single lens and there was a nice article in www.howstuffworks.com. However I am unable to find the information on the website.Any answers will be appreciated and anything which supplements to the answer provided by weblinks such as howstuffworks.com will be highly appreciated.

How does a CD-RW/DVD Combo work ?Does it use single or Multiple lens for CD and DVD respectively ?

Computer data storage, often called storage or memory, is a technology consisting of computer components and recording media used to retain digital data. In addition to local storage devices like CD and DVD readers, hard drives and flash drives, solid state drives can hold enormous amounts of data in a very small device. Cloud services and other new forms of remote storage also add to the capacity of devices and their ability to access more data without building additional data storage into a device.