What is CD-ROM based shopping?
3.2 CD-ROM based Shopping: Relatively inexpensive to produce and distribute, CD-ROMs represent a cost-effective alternative to traditional print catalogs. Retailers are increasingly looking toward the Web as a retail outlet because of its reach, constant innovation, and low cost.
What stores CD-ROMs?
CD-ROM, abbreviation of compact disc read-only memory, type of computer memory in the form of a compact disc that is read by optical means. With a storage capacity of 680 megabytes, the CD-ROM found rapid commercial acceptance as an alternative to so-called floppy disks (with a maximum capacity of 1.4 megabytes).
What is a CD-ROM used for?
An acronym for Compact Disc Read-Only Memory, a CD-ROM is a storage medium for digital data. CD-ROMs can hold 650 MB or 700 MB. CD-ROM are commonly used for software installation programs, such as you might buy at your local retail store.
What is CD-ROM Catalogue?
CD-ROM catalog. presentation of a set of items available for purchase, including description, price, and ordering information, on a CD-ROM disk. CD-ROM catalogs are particularly popular with business-to-business marketers whose product line includes vast quantities of items.
Are CD ROMs still used?
CD-ROM will become pretty much obsolete in countries with decent internet coverage within the next 5 years, especially since band with keeps improving. Hardware companies still send drivers with their products on CD-ROM, but that’s also starting to disappear in highly developed regions.
What is the basic feature of CD-ROM?
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.
What is CD-ROM made of?
polycarbonate plastic
CD-ROMs are identical in appearance to audio CDs, and data are stored and retrieved in a very similar manner (only differing from audio CDs in the standards used to store the data). Discs are made from a 1.2 mm thick disc of polycarbonate plastic, with a thin layer of aluminium to make a reflective surface.
Which is an example for CD-ROM?
An example of a CD-ROM drive is where a person can play a music CD on the computer. A device that holds and reads CD-ROM discs. Modern CD-ROM drives also play audio CDs.
Why do modern PCs not have DVD drives?
Discs Are Dying Optical drives tend to occupy much space, thus making computers bulky, which isn’t attractive anymore. Moreover, discs don’t have the same storage capacity as USB flash drives or external hard drives. There are also security issues with the Blu-Ray format that discourages some users from purchasing it.
Which is the correct definition of a CD ROM?
A CD-ROM (/ˌsiːdiːˈrɒm/) is a pre-pressed optical compact disc which contains data. The name is an acronym which is short for “Compact Disc Read-Only Memory”.
How long does it take to play a CD ROM?
This value, 150 KB/s, is defined as “1× speed”. Therefore, for Mode 1 CD-ROMs, a 1× CD-ROM drive reads 150/2 = 75 consecutive sectors per second. The playing time of a standard CD is 74 minutes, or 4,440 seconds, contained in 333,000 blocks or sectors.
What kind of plastic is a CD ROM made out of?
Discs are made from a 1.2 mm thick disc of polycarbonate plastic, with a thin layer of aluminium to make a reflective surface.
What is the net byte rate of a CD ROM?
The net byte rate of a Mode-1 CD-ROM, based on comparison to CD-DA audio standards, is 44,100 Hz × 16 bits/sample × 2 channels × 2,048 / 2,352 / 8 = 153.6 kB/s = 150 KiB/s. This value, 150 KiB/s, is defined as “1× speed”. Therefore, for Mode 1 CD-ROMs, a 1× CD-ROM drive reads 150/2 = 75 consecutive sectors per second.