A scanner is a device that optically scans objects like printed text or handwriting and converts it into a digital image that can be transferred to and viewed on a computer screen. It works by placing the object on the glass window, where it is illuminated and its image captured by a sensor array, usually CCD, with red, green, and blue filters, that converts it into a digital file. Scanners are used to scan objects into files that can be saved and managed on a computer.

1. • What’s a SCANNER?
in computing a scanner is a device that
optically scans:
• Steps of a SCANNER
First place the object into the
glass window for scanning
Printed Text Scans images
So the scanner can scan
Handwriting the object and transfer to
Object the computer screen
Converts it to a
digital image

2. CCD Scanner
• A flatbed scanner is usually composed of a glass pane
(or platen), under which there is a bright light (often
xenon or cold cathode fluorescent) which illuminates
the pane, and a moving optical array in CCD scanning.
CCD-type scanners typically contain three rows (arrays)
of sensors with red, green, and blue filters.
Why Scanner is used for?
Prices
Scanner is used for scanning the object into
£62 the computer so the file can be saved in the
computer.

3. • What’s an Acrobat reader (for PDF)?
Adobe Acrobat is a family of application
software developed by Adobe Systems to view,
create, manipulate, print and manage files in
Portable Document Format (PDF).
Prices
£229
Why Acrobat Reader is use for?
This release adds the ability to play back
embedded multimedia files in MP3,
QuickTime, Macromedia Flash, Real, and
Windows Media formats, as well as to submit
Adobe PDF forms.