Skip to main content

Drum scanners

Drum Scanners get their name from the glass cylinder, or drum, that the image to be scanned is mounted on.

In the middle of the drum is a light-splitting sensor which breaks the light bounced from the document in to red, green & blue components.

these color beams are sent to a photo multiplier tube or charge coupled device (CCD), where the light beam is converted to an electrical signal.

Electrical signal is then sent to monitor by a cable where we see the scanned image.

Comments

Post a Comment

Popular posts from this blog

Installing A Printer

Go to Control Panel Click Printer Option Click Add a Printer Click Add Local Printer Select Port Select The Printer & click Next Click Next Installation Wizard Appears Now The Printer is Successfully Installed You can see your installed Printer icon in printer wizard in control panel
Post a Comment
Read more

Wired Equivalent Privacy

Wired Equivalent Privacy (WEP) is a security used in IEEE 802.11 wireless networks introduced in year Sep 1999, it was available on Router Configuration In WEP there are 2 Formats Hexadecimal ASCII
Post a Comment
Read more

Touch Screen

This is used in laptops work in the same way as those that you have seen in bank ATM's. Here the screen display several buttons, you have touch the location specific to a button in order to select an item from the menu. Touching the screen button gives the same result that you will get by double clicking an item on the screen using your mouse.
Post a Comment
Read more