Skip to main content

Explain Advantages of CD and DVD and Differences Between CD and DVD

Topic: Explain Advantages of CD and DVD and Differences Between CD and DVD

 What is CD?

CD stands for Compact Disc. Compact Disk or CD is a popular storage device. It is a portable storage device. It can store about 700 MB (Mega Bytes) of data.

Advantages of Compact Disk

  • It can store large amounts of different types of data. It can store information in the form of sound, videos, programs or software, pictures and other graphics, documents and many more formats of data.
  • We purchase games and software stored on CDs. CD can store audio/ video songs and videos, too.
  • It is very inexpensive way of storing large amounts of data permanently.
  • It is used for backing up of important data, that can be recovered in future if any data is lost from our PC's hard disk.
  • Compact Disks are easy to use and easy to carry.
  • Compact Disks are durable and reliable. CDs can store data for many years without losing a single byte.

Different Types of Compact CDs are:

CD-ROM (Compact Disk Read Only Memory)

CD-ROM comes with already stored data on it, like games or software. As the name CD-ROM says, data can not be deleted or edited on CD-ROM. We can only read or copy data from CD-ROM.

CD-R (Compact Disk Recordable)

Compact Disc Recordable is a blank disk. We can store data on it with the help of CD-Writer only once. Then it becomes CD-ROM. So, we can only read data. We cannot change or delete data.

CD-RW ( Compact Disk Rewritable)

CD-RW disk is more useful type of Compact Disk. We can write data on CD-RW many times. We can read data, write data, erase data and rewrite data on CD-RW for many times.

What is DVD?

DVD stands for Digital Video Disk or Digital Versatile Disk. The basic difference between CD and DVD is that DVD has much more data storage capacity. DVD can store data up to 17 GB (Giga Bytes).

Advantages of DVD


  • DVD can store much more larger amounts of different types of data as compared to CD. It is used to store HD movies. It can store information in the form of sound, videos, programs or software, pictures and other graphics, documents and many more formats of data.
  • We purchase high quality movies, games and software stored on DVDs.
  • It is very inexpensive way of storing large amounts of data permanently. Although it is more expensive than CD but it can store much more data.
  • It is used for backing up of important data, that can be recovered in future if any data is lost from our PC's hard disk.
  • DVDs are easy to use and easy to carry.
  • DVDs are durable and reliable. DVDs can store data for many years without losing a single byte.

Different Types of DVDs are:

DVD-ROM (Digital Video Disk Read Only Memory)

DVD-ROM comes with already stored data on it, like movies, games or software. As the name DVD-ROM says, data can not be deleted or edited on DVD-ROM. We can only read or copy data from DVD-ROM.

DVD-R (Digital Video Disk Recordable)

Digital Video Disc Recordable is a blank disk. We can store data on it with the help of DVD-Writer only once. Then it becomes DVD-ROM. So, we can only read data. We cannot change or delete data.

DVD-RW ( Digital Video Disk Rewritable)

DVD-RW disk is more useful type of DVD. We can write data on DVD-RW many times. We can read data, write data, erase data and rewrite data on DVD-RW for many times.

Here we tabulate the main differences between CD and DVD.



Sr. No
CD
DVD
1
CD stands for Compact Disk
It stands for Digital Video Disk or Digital Versatile Disk.
2
CD can store about 700 MB of data. So, data storage capacity is much smaller than that of DVD.
DVD can store up to about 17 GB data. Therefore, data storage capacity is much larger than that of CD.
3
Technology to read/write on CD uses a laser beam of larger wave length that makes larger pits (tiny holes) on CD. Each pit represents a binary 1.
Technology to read/write on DVD uses a laser beam of shorter wave length that makes smaller pits (tiny holes) on DVD. Each pit represents a binary 1. Therefore, there will be more pits on DVD surface than that of CD. So there will be more data storage capacity of DVD than that of CD.
4
CD is cheaper than DVD.
DVD is more expensive than CD.
5
CD has slower data transfer rates.
DVD has faster data transfer rates.
6
Different types of CD include: CD-ROM, CD-R and CD-RW.
Different Types of DVD are: DVD-ROM, DVD-R and DVD-RW.


You may also like:


Computer Hardware Concepts

2.1 What are Different Types of Hardware
2.2 What are Different Types of Input Devices
2.3 Explain Different Types Of Output Devices
2.4 Explain Parts of CPU and its Working
2.5 What are Dual Devices or Both Input/ Output Devices
2.6 What is RAM, Explain Different Types of RAM
2.7 What is ROM Explain Different Types of ROM
2.8 Discuss Differences Between RAM and ROM
2.9 Explain different types of storage devices
2.10 What are Pointing Input Devices
2.11 Different Types of Mouse Input Device
2.12 Types Of Scanners Input Device



Comments

Popular posts from this blog

Explain Main Difference Between System Software and Application Software

Topic: Explain Main Difference Between System Software and Application Software            Differentiate between system software and application software Before , explaining the main differences between application software and system software, let us know the definitions of Application software and System software with examples. What is System Software: System software is a set of programs to control all components of computer and to manage overall operations of computer system. Differences between System software and application software System software is used as a base to install and run all application software. Examples of system software include: Operating Systems, like Microsoft Windows, DOS, Unix and Linux Device Drivers like Device driver software of a Printer (found on CD normally provided with the printer) Utility Programs like AVAST anti virus, Disk Scanners and File Viewers etc. What is Applicat...

Uses Of Computer in Medical Field

Today Computers are an essential part of an hospital . Doctors and administration staff uses computers to manage patient history and medicine stocks etc. Computers play a key role in the medical field .  Their uses include storing patient related data, housing knowledge bases, providing the logic and circuitry for medical equipment, scanning and imaging the body, and facilitating speedy communications. Computers can be used in medical field in the following ways: Uses of Computers in Medical Field Top Seven Uses of Computers in Medical Field    Hospital Administration These days, Computers are being used in hospitals extensively . We can computerize the accounting, payroll and stock system of the hospital. We can keep the record of different medicines.  Recording Medical History Of Patients Computer can be used to store the medical history of the patients . Medical history is very important for patients as well as doctors. Doctors may ...

Advantages and Disadvantages of Mesh Topology

Topic: Advantages and Disadvantages of Mesh Topology Mesh Topology In a mesh topology, every device on the network is physically connected to every other device on the network. Therefore, data can be sent on several possible paths from source computer to destination computer. Mesh topology is more reliable with better performance. Mesh Network Topology is mostly used in wide area networks where reliability is important. Advantages of Mesh Network Topology 1. Since, there are many links to transfer data, Mesh topology gets rid of the traffic problem . Data may be transferred through different links. 2. If one link becomes unusable, it does not disturb the whole system . Other links can be used for communication. 3. Since each node has physical connection with other nodes, therefore, one node can transfer data to many nodes at the same time. Disadvantages of Mesh Network Topology 1. It is very expensive due to implementation of multiple links for each no...