By eliminating the need to retype text from print media onto the screen, Optical Character Reader saves users a great deal of time.

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In a room down the corridor, several people are hard at work scanning barcodes from stacks of documents with an optical character reader.

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But, starting in the nineteen-thirties, music soundtracks were added to silents, and the films needed to move through the projector at twenty-four frames a second, so that the optical sound reader could handle the music track.

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The typical standards of built-in optical drive, HP QuickPlay, 6-in-1 card reader and 6-cell batter round out the capable, but lower-end laptop.

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It also has DVD-RW optical drive (can you believe it?), a card reader, a bunch of ports and even a TV Tuner should you want one.

ENGADGET

It also has a DVD-RW optical drive (can you believe it?), a card reader, a bunch of ports and even a TV Tuner should you want one.

ENGADGET

Amazon's first Kindle e-reader used a plastic non-rigid screen - known as an optical frontplane - to display its images.

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