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Which devices provide automated methods for recognizing distinctive features or actions of an
individual?
Which device throws a light beam on the document in which marks are made and analyses the
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Answers
Answer:
o. ______ Date: 18.04.2020
Lesson 1: More Peripherals
As explained earlier, a peripheral device is any device attached to a computer in order to enhance
its capabilities. Printers, scanners, microphone, speakers and digital cameras are some of the
common peripherals devices. Let us discuss some more extensively used devices that have an
important role to play in our lives.
1. Biometric Devices: These devices provide automated
methods for recognizing distinctive features or actions of an
individual like iris recognition, reorganization of hand
geometry, finger recognition, facial reorganization, voice
reorganization etc.
“Biometric refers to the identity verification of living persons
based on their physical characteristics like the characteristics of
their fingers, hands, feet, face, eyes, ears etc.”
2. Optical Mark Reader (OMR):OMR detects the presence or
absence of a mark in a specific position. An Optical Mark
Reader throws a light beam onto the document on which
marks have been made, and analyses the reflected light to
decide the mark position. A mark position is decided asless
light is reflected from a marked cell than the unmarked
cell.
3. Magnetic Ink Character Reader
(MICR): MICR machine reads the special
characters printed in a standard font using an ink containing iron oxide. In a
cheque, the cheque number, the branch code, the account number etc are
printed using the MICR font and when passes through a MICR reading
machine, the correct details of the transactions are interpreted and updated
by the computer.
4. Magnetic Stripe Card/Reader:
To read data from a smart card, the
card is swiped through a magnetic card unit, which
converts the information into computer readable
characters for further processing. ATM cards;
Credit cards like VISA, MASTER-CARD etc are some
of these types of cards.