Define each of the following
term. Explain the main purpose/ use/ advantage.
(i)
Inode
(ii)
Reading from CD-ROM disk
(iii)
Raster Display
(iv)
Use of colour depths
(v)
Scan codes in keyboards
Resolution of monitor
Ans
ī´nōd) (n.) Data structures that contain
information about files in Unix file systems that are created when a file
system is created. Each file has an inode and is identified by an inode number
(i-number) in the file system where it resides. inodes provide important
information on files such as user and group ownership, access mode (read,
write, execute permissions) and type.
There are a set number of inodes, which
indicates the maximum number of files the system can hold.
Stands for "Compact Disc Read-Only
Memory." A CD-ROM is a CD that can be read by a computer with an optical
drive. The "ROM" part of the term means the data on the disc is
"read-only," or cannot be altered or erased. Because of this feature
and their large capacity, CD-ROMs are a great media format for retail software.
The first CD-ROMs could hold about 600 MB of data, but now they can hold up to
700 MB. CD-ROMs share the same technology as audio CDs, but they are formatted
differently, allowing them to store many types of data.
The term raster refers to the region of a
cathode ray tube ( CRT ) or liquid crystal display ( LCD ) monitor that is
capable of rendering images.
True color is the specification of the color
of a pixel on a display screen using a 24-bit value, which allows the
possibility of up to 16,777,216 possible colors. Many displays today support
only an 8-bit color value, allowing up to 256 possible colors.
Monitor resolution is the measurement of the
number of pixels that a computer display or monitor can show at one time.
Monitors that display more pixels offer a sharper, brighter image. The term
"pixels" is short for picture elements, and a pixel is the smallest
element of an image.
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