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How the laser printer works:            simplified diagram of printer                    When you print something, your computer sends a vast stream of electronic data (typically a few megabytes or million characters) to your laser printer. An electronic circuit in the printer figures out what all this data means and what it needs to look like on the page. It makes a laser beam scan back and forth across a drum inside the printer, building up a pattern of static electricity. The static electricity attracts onto the page a kind of powdered ink called toner. Finally, as in a photocopier, a fuser unit bonds the toner to the paper.      Millions of bytes (characters) of  data  stream into the printer from your computer. An  electronic circuit  in the printer (effectively, a small computer in its own right) figures out how to print this data so it looks correct on the...

How To Increase The Clarity of the Mobile Camera: How to increase the clarity of the mobile camera            The cameras in cell phones just keep getting better and better. Features like auto focus, flash, and high-resolution image sensors have made grainy, unfocused, washed-out cell-phone shots largely a thing of the past. Still, they're not up to par with dedicated digital cameras, that come equipped with larger image sensors and features like optical image stabilization. And all cell-phone cameras aren't created equal.        For example:   the   Apple iPhone 4   offers 5-megapixel captures, while the inexpensive   Samsung Contour SCH-R250   can only deliver tiny 0.3-megapixel VGA-quality photos—that's like shooting pictures with a webcam.       With the right settings and a few handy tips, though, a cell phone camera can take some fantastic shots. Even if you have a pretty crummy...

How the digital camera works How The Digital Camera Works: Sectional view of a camera Introduction:             A  camera  is an  optical  instrument for recording or capturing  images , which may be stored locally, transmitted to another location, or both. The images may be individual still  photographs  or sequences of images constituting  videos  or  movies . The camera is a  remote sensing  device as it senses subjects without physical contact. The word  camera  comes from  camera  obscure , which means "dark chamber" and is the  Latin  name of the original device for projecting an image of external reality onto a flat surface. The modern photographic camera evolved from the camera obscure. The functioning of the camera is very similar to the functioning of the  human eye . The first permanent  photograph  of a camera image was made...