The stored data can be stored in digital form. There are three types of data storage, data storage, namely primary, secondary and tertiary storage devices storage devices. The classification of computer storage media is based on the task by the unit has performed. The primary storage device is commonly referred to as random access memory, while the secondary storage device the hard disk. The tertiary storage devices are removable mass storage devices. While the amount of data stored on the primary and is less volatile by nature, while the secondary storage device and have better memory not volatile in nature. Let us see the types of data storage
Primary Computer Storage Devices
The primary storage media for computers are actually a part of the computer's memory. We have been the terms used, such as RAM and ROM, but can not know exactly what they are. They are the Random Access Memory (RAM) and Read Only Memory (ROM).
Random Access Memory
The Random Access Memory is used for temporarily storing information. If the computer is off, the information is wiped over the RAM. The access time of RAM is much higher. They are more expensive than other types of primary storage devices.
Read Only Memory
It is used to store data permanently. Data can be stored in ROM, either when the computer is manufactured or by the computer user. However, the disadvantage of this type of memory, the data are stored in ROM can not be changed. The access rate is required to get theMemory is much less than the access time of RAM compared. In contrast to the ROMs RAMs are not expensive.
Secondary computer storage devices
Most of the memory devices, we know that fall under this category. You are not a part of the processor. People use these devices so that the storage capacity of the computer can be increased. Like the ROM, the secondary computer storage is not too volatile. The information is stored on these devices maintained even when the computer is turned off.
Hard drives
The hard drives are one of the most important of the secondary types of computer memory, hard drive types. The data is stored on the hard disk in digital format on the hard disk. In the early days of computer hard disks were like removable mass storage. But over time they began to come as part of the central processing unit of the computer. But now there are external hard drives available.
Floppy discs
This is a magnetic storage medium that is placed in square plastic bowl. They are available in various sizes such as 8 inch, 5 ¼ inch and 3 ½ inches. In the first days of floppy disks were very popular, but with the progress she has over shadowed the other computer storage devices.
Compact discs
Prior to Compact Discs (abbreviated CD) were used for recording and storing audio files. Then, along with audio, video and other data are stored on them. These discs can store data for long time. The data are based on the CDs stored in optical format. Backup can be stored on the CDs.
Digital Versatile Disc
The size of storing data in the digital versatile discs (DVD) is similar to a CD. The difference lies in the memory. It is six times more space on the DVD, as compared to the CD. As the CD's, DVD's are also used as a backup device.
Flash memory
With a lot of research was the flash memory. These storage media of a computer is similar to the read-only memory. However, there is a big difference between flash memory and ROM. Data from the flash memory can in a matter of seconds from the flash drives that is not the case, will be deleted with the ROM. At the same time, the data can be changed as per the requirement.
Blu-ray Discs
Blu-ray discs are abbreviated as BD, used for high-definition video memory. It is often used by players. Blu-ray discs are similar to the CD and DVD in their appearance. It is the space that makes the difference between the CD, DVD and BD. Blu-ray Disc is an optical storage medium.
USB Flash Drive
The USB flash drive consists of a NAND-type flash memory. It features an integrated Universal Serial Bus (USB) interface. You are not volatile and can be rewritten on it. They are very small, but very large space. There are just some of the USB drives, in which 1 million erase and write cycles can be performed. On the other hand, some of them are known to retain data as long as 10 years.
Memory Cards
The next are examples of computer storage devices, the memory card. The data is storedin digital format on the memory card. You can in various electronic devices from hand held computers, mobile phones, cameras, etc. They are also rewritable can be used. Although they are small, they can save a large amount of data.
These are computer-storage devices. With the constant advancement in technology, new media constantly getting added to the storage devices. Together with the new devices, there is progress that is made to the access speed and the capacity to increase the stored data.
