In this presentation you will know about scanners and how many types does scanner have and how does a scanner works where scanners are used what are their role model in nowadays.

2. SCANNER
•Group members - Amir hamza khan Bhaves Rathi Sarim Shehzad
•Intructor - Sir Saqib

3. WHAT IS SCANNER ?
•A scanner is an input device that scans documents such as
photographs and pages of text. When a document is
scanned, it is converted into a digital format. This creates
an electronic version of the document that can be viewed
and edited on a computer.

4. FLATBED SCANNERS
•Most scanners are flatbed devices, which means they
have a flat scanning surface. This is ideal for
photographs, magazines, and various documents.
Most flatbed scanners have a cover that lifts up so
that books and other bulky objects can also be
scanned.

5. SHEET-FED SCANNERS
•Another type of scanner is a sheet-fed scanner, which
can only accept paper documents. While sheet-fed
scanners cannot scan books, some models include an
automatic document feeder, or ADF, which allows
multiple pages to be scanned in sequence.

6. HOW DOES A SCANNER WORKS ?
•Scanners work in conjunction with computer software
programs, which import data from the scanner. Most
scanners include basic scanning software that allows the
user to configure, initiate, and import scans. Scanning
plug-ins can also be installed, which allow various
software programs to import scanned images directly.

7. CONTINUE
•For example, if a scanner plug-in is installed for
Adobe Photoshop, a user can create new images
in Photoshop directly from the connected
scanner.

8. CONTINUE
• While Photoshop can edit scanned images, some programs like
Acrobat and OmniPage can actually recognize scanned text.
This technology is called optical character recognition, or OCR.
Scanning software that includes OCR can turn a scanned text
document into a digital text file that can be opened and edited
by a word processor. Some OCR programs even capture page and
text formatting, making it possible to create electronic copies of
physical documents.

9. OPTICAL MARK
RECONITION
•Reads hand-drawn marks such as small circles or rectangles
•An OMR device scans the documents and matches the
patterns of light

10. SOME MAJOR MANUFACTURERS OF
SCANNERS ARE GIVEN BELOW
Epson, Hewlett-Packard, Microtek,
and Relisys.

11. BAR CODE READER
A barcode reader (or barcode scanner) is an electronic
device for reading printed barcodes. it consists of a
light source, a lens and a light sensor translating
optical impulses into electrical ones. Additionally,
nearly all barcode readers contain decoder circuitry
analyzing the barcode's image data provided by the
sensor and sending the barcode's content to the
scanner's output port.

12. RFID (RADIO FREQUENCY
IDENTIFICATION
Radio-frequency identification (RFID) is the wireless
use of electromagnetic fields to transfer data, for the
purposes of automatically identifying and tracking
tags attached to objects. The tags contain electronically
stored information. Some tags are powered by and read
at short ranges (a few meters) via magnetic fields
(electromagnetic induction)

13. CONTINUE
• Others use a local power source such as a battery, or else have no
battery but collect energy from the interrogating EM field, and then
act as a passive transponder to emit microwaves or UHF (ultra high
frequency) radio waves (i.e., electromagnetic radiation at high
frequencies). Battery powered tags may operate at hundreds of meters.
Unlike a barcode, the tag does not necessarily need to be within line of
sight of the reader, and may be embedded in the tracked object.

14. MEGNETIC STRIP CARD
READERS
• A magnetic stripe card is a type of card capable of storing data by
modifying the magnetism of tiny iron-based magnetic particles on a band of
magnetic material on the card. The magnetic stripe, sometimes called swipe
card or magnet stripe, is read by swiping past a magnetic reading head.
Magnetic stripe cards are commonly used in credit cards, identity cards, and
transportation tickets. They may also contain an RFID tag, a transponder
device and/or a microchip mostly used for business premises access control or
electronic payment.

15. HERE YOU CAN SEE
MAGNETIC STRIP

16. MAGNETIC INK CHARACTER RECOGNITION
• Magnetic ink character recognition (MICR) is a character-recognition
technology used mainly by the banking industry to
ease the processing and clearance of cheques and other documents.
The MICR encoding, called the MICR line, is at the bottom of
cheques and other vouchers and typically includes the document-type
indicator, bank code, bank account number, cheque number,
cheque amount, and a control indicator. The technology allows
MICR readers to scan and read the information directly into a
data-collection device. Unlike barcodes and similar technologies,
MICR characters can be read easily by humans.

17. BIOMETIC INPUT
• biometrics is the identification of a person by the measurement
of their biological features. For example, a user identifying
themselves to a computer or building by their finger print or
voice is considered a biometrics identification. When compared
to a password, this type of system is much more difficult to fake
since it is unique to the person. Below is a listing of all known
biometric devices.
• Other common methods of a biometrics scan are a person's face,
hand, iris, and retina.

18. TERMINAL COMPUTER
• computer terminal, a device that enables a computer to receive or deliver
data. Computer terminals vary greatly depending on the format of the data
they handle. For example, a simple early terminal comprised a typewriter
keyboard for input and a typewriter printing element
for alphanumeric output. A more recent variation includes the keyboard for
input and a television like screen to display the output. The screen can be
a cathode-ray tube or a gas plasma panel, the latter involving an ionized
gas (sandwiched between glass layers) that glows to form dots which, in
turn, connect to form lines. Such displays can present a variety of output,
ranging from simple alphanumerics to complex graphic images used as
design tools by architects and engineers.

19. CONTINUE
• Portable terminals frequently use liquid crystal displays because of their low
power requirements. The terminals of pen-based computers use a stylus to
input handwriting on the screen. Touch-sensitive terminals accept input
made by touching a pressure-sensitive panel in front of a menu displayed on
the screen. Other familiar types of terminals include store checkout systems
that deliver detailed printed receipts and use laser scanners to read
the barcodes on packages, and automatic teller machines in banks