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CD-ROM as a medium for optical data storage (Optical Storage) uses a laser beam to read data CDs made from plastic sheets coated with aluminum. To reflect the laser shot. When the laser beam is reflected back to the source. Read the information called Photo Detector What will get back to what it is and the values ​​0 and 1 to return the CPU. To further processing.

CD ROM as a medium for optical data collection (Optical Storage) using a laser beam to read the information sheet, CD-ROM, made of plastic sheet coated with aluminum. To reflect the laser shot.CD ROM as a medium for optical data collection (Optical Storage) using a laser beam to read the information sheet, CD-ROM, made of plastic sheet coated with aluminum. To reflect the laser shot.The reader is called Photo Detector can read the data get back that was, and the 0 1 go back and CPU for processing.