Hello, readers welcome to the new post. Here we will learn Difference between CD and DVD. There is common types of optical disk used for data storage are CDs and DVD. DVD can store larger amount of data than a Compact disk. There is two-sided data store that occurs in DVD and has polycarbonate substrates on both sides while CD has single-sided data storage on one side.
Here we will discuss different parameters to find differences among these two storage devices. So let’s get started.
What is CD or Compact Disc
- The CD is a compact disc is a digital optical data storage device and was created by Philips and Sony.
- It was the first time created in 1982 and used for digital audio compact disc.
- The diameter of a normal CD is one twenty millimeters or 4.7 inches and there is six-fifty megabytes of data can store.
- Its data storage ability can be enhanced to seven hundred megabytes.
- There are ranges of sixty to eighty millimeters that can be used.
- Its thickness is about 1.2 mm and is created with polycarbonates plastic and its weight is fourteen to thirty-three g.
- The distance between the spiral loos is 1.6 micrometers.
- The data transfer speed is about 1.4 to 1.6 megabits per second.
- Error detection codes for CD is CIRC and EFMP
- The data representation for CD in the form of small-size modules called pits. The space between the pits is called land.
- CD can be damaged by environmental causes.
Types of CD
- CDR
- CD ROM
- CD RW
Advantages of CD
- main benefits of CD are listed
- It can work for a long time interval
- It comes with random access of data
- Can store data up to seven hundred megabytes
- The use of lasers reduces sound in it for data storing
- It is a portable device
- less expensive
What is DVD
- The DVD stands for digital video disc and the first time was created in 1995 and used for practical work in 1996.
- It can store a large amount of data than the CD.
- It comes with features that prerecorded DVDaer created through the use of molding machines.
- This DVD is called DVD ROM since has features to read data and then change it.
- It can store data starting from 4.7 gigabytes. and Data written with a speed of 18 to 20 times.
- The constructed material for this device is the same to the CD.
- There is a position of metallic layers for this device is the center
- Pits lie on the module on both sides
- The distance between loops for this device is 0.74 cm
- Data Transfers speed for DVD is 11 Mb/Sec.
- Its thickness is 0.6 millimeter
Advantages of DVD
- The main advantages of DVD are listed here
- Files of a large amount of data in GBs can store
- Movies and dramas are stored in it
- Computer data is also stored in it
- It can store ten-time data than CD
- Can be used from one device to another due to its portable nature
CD vs DVD
CD
- Its size is 700mB. The recording or metallic layer is based on the disk.
- It has a single pit layer.
- It has a 1.6-micrometer distance between spiral loops.
- The CD comes with a 0.834-micrometer distance between pits.
- There is CIRC and EMFP used for the detection of errors in CD.
- It can damage metallic layers after removing adhesive labels
- Its data transfer rate is about 1.4 MB to 1.6 MB/sec.
- The channel bit length is about 300 nanometers.
- It comes with 0.45 aperture
- Its thickness is about 1.2 mm.
DVD
- Its acquire size is about 4.7 GB to 17 GB
- A recording or metallic layer exists in the center point of the disk
- It has double layers of pits.
- It has 0.74-micrometer space between spiral loops.
- 0.4 micrometer space for pits.
- RS-PC and EFMplus were employed for error correction codes.
- There is an imbalance in spin when removing adhesive labels, in DVDs.
- The data transfer speed is 11 MB/sec.
- The channel bit length is 113 nanometers which is less as compared to CD channel
- numeric aperture value is 0.6.
- thickness of the DVD is 0.6 mm.
How to tell if a disc is a CD or DVD?
- If a disc commercial is made then check the label at close to center. If there is a compact disc. It is a CD and if there is a picture of the disc with no written text it means CD.
Are CD and DVD drives the same?
- Digital disc read-only memory drive is a direct evolution of CD from drives. DVDs come with high capacity and working. DVD from drives has features for reading CD, DA, CD from, and CR R/RW discs
that is all about the Difference between CD and DVD. I have explained each and every parameter related to CD and DVD in the detail. If you have further query ask in the comments. Thanks for reading have a good day
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