WHAT IS CD DRIVE ?
CD DRIVE
Data is read and written from CD through
CD drive. CD drive is in the form of an
iron box in which CD is inserted for
reading or writing. Burned A Gas and
unburned areas are used to write data to
the CDR. In this, the non-lit area
represents 1 and the burned area
represents 0. In CD, wherever
zero is to be written, a small black spot is
made by burning the color of its surface by
putting a three beam of laser beam, it is
called burn area Where - where 1 is to be
written on CD - R, there - nothing is done
by the laser emitting device. Hence the
unburned surface is treated as 1. A light
sensor is placed adjacent to the laser
emitting device, whose function is to
convert the light that strikes the CD back
into electricity. When data is being read
from CD, CD starts rotating by a motor.
After this a laser is put on it by the laser
emitting device. If there is an unburned
area in front of the laser emitting device, it
will reflect the laser. This reflected light is
captured by the light sensor. The
electricity generated from this is sent to the
CPU, which the computer treats as a (1).
Conversely, when there is a burned area in
front of the laser emitting device, it does
not reflect the incoming laser in the
opposite direction, so the laser light does
not reach the sensor and it does not
generate electricity. Is . In this case the
computer considers it as zero 0. In this
way the computer receives data in the
form of one (1) and zero ( 0 ). Other types
of CDs also work on the same principle as
CD-R.
Read More
What is ROM (Read Only Memory) ? & Types of ROM.
Output device and his types define and pictures.
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