Data Storage Devices

It is just another area on the hard drive for you to store data. There is no difference between the C and D hard drive. Although many computer manufacturers split a hard drive in 3 parts. 1 is a hidden partition that basically stores the factory system restore program, the second is the C drive, and the thrid is the D drive which can be used as a backup for the system.

You may use disk management (vista only) or a thrid-party partition editor (recommed for xp or lower) to resize your partitions if you want to get rid of the D drive to increase space on the C drive.

No. You can use them in dual format drives, though.

microSD Card reader is available in the market. Insert microSD card in the Micro SD Card reader and connect the Card reader to USB port in the Computer.The USB device will be shown in the folder list.Now you can read files from your microSD card. for picture and other details of microSD card Reader you may check this web page: http://cgi.ebay.com/New-USB-Card-Reader-Writer-for-Micro-SD-TransFlash-D_W0QQitemZ200117095626QQcmdZViewItem

When the Semiconductor technology not in existence there was a usage of magnetic tapes and magnetic drums which were the Sequential access means If you currently at the position of words which is starts from 'A' so if you need to look up the words started from 'Z' then you've to go through all alphabets means b,c,d........y then you'll get your position at 'Z'. It's similar to Audio or Video cassette.....

But the Ram is Random Access means "The ability of a computer to find and go directly to a particular storage location without having to search sequentially from the beginning location"

The human equivalent of random access would be the ability to find a desired address in an address book without having to proceed sequentially through all the addresses.

No. Floppy disks are magnetic media that rely on magnetic polarization to write data to the disk much like a hard drive. Unlike CD media they can be erased by a strong magnet field that effectively scrambles the data tracks.

i don't really know what it is??

A DVD-R is a DVD disc that allows you to put your own information onto it. The -R in DVD-R means "recordable." Unlike a DVD you get from the video store, DVD-Rs are blank to begin with. Once you write data to them, they cannot be erased. The most common DVD-R is a write once 4.7GB "general purpose" disc, which is roughly equal to 120-minutes of standard playing lime.

While there are many advantages to electronic storage devices, there also some disadvantages. The disadvantages include their ability to get a virus, and the technical issues that they can often experience. These issues can be difficult for many users to fix.

It's sequential (or serial) access. The records are written one after the other (as if in a line or queue) and in order to find one the tape must be fast-forwarded or rewound as appropriate until the beginning of the record is found.

As the name implies: BACKUP Data to protect against Data Loss. Data Loss can be in several forms and caused by several things:

1) Virus and their ilk

2) Hardware failure (it's not uncommon for Hard Drives to fail)

3) Accidental/Intentional Data Destruction (An accidental click of the 'Delete' button...inexperienced user on a common computer (children or relatives), Disgruntled family member/employee, Software/hardware caused system crash.

4) Theft/Vandalism

5) Fire/Flood/Act of God

6) This is a long-shot, but let's just mention a loss of the Computer Administrator which causes inaccessibility to computer data (Master Computer has complicated PW and Person in charge of that PW/Data dies). Hey, unlikely, but possible.

Methods of Backup:

1) OS-based Backup Software (typically backs-up to the Primary Hard Drive)

2) Hardware-Based Backup

a) RAID or similar (prevents from single or multiple disk failures

b) Network Backup device (saves data to a location (either HD or otherwise) which is not located on the same computer as the data itself)

3) Burn-to-Disc method (perform regular scheduled backups to a CD or DVD and then store this disc(s) in a safe location (fireproof safe if available)).

4) Online Data Backup (Paid Service such as Cryptonite, Cloud-based storage, ISP provided storage, web-based FTP or similar, etc). This is Storage Space either Free or otherwise which is located on Servers which can be accessed via the Web/Internet/VPN/etc...they are NOT located at the same location as the Data/Computer itself.

Each of these options have their strong points and weak-points and each individual much choose the level of protection that they deem necessary as well as staying within whatever budget they have available for such an endeuvour, and all while understanding their own level of computer/technical expertise. Some of these options can be very technical and/or time consuming (usually only at the initial setup).

Many may wish for simple, free, easy Data Backup...For you, I'd recommend OS-Based.

Others may wish for simple & cheap: OS or Software-based Burn-to-Disc.

Others still may want Real-time (or close to it) and aren't so concerned with ease or cost...for you, I'd recommend HW-based options (RAID or Dedicated Backup Drives)

Some may want mobile access to their data and are less concerned about the sensitivity of their data in which case I'd recommend Online-based storage.

As a backup for saving files. You may lose data if it is not saved to secondary storage. When you turn off your computer, any unsaved data is lost. That is why you need to save it to something like a USB key.

bit

byte

kilobyte (kB) = 1,024 bytes

megabyte (MB) = 1,024 kB

gigabyte (GB) = 1,024 MB

terabyte (TB) = 1,024 GB

petabyte (not pettabyte) (PB) = 1,024 TB

exabyte (EB or XB) = 1,024 PB

zettabyte (ZB) = 1,024 XB

yottabyte (YB) = 1,024 ZB

I find the mis-ordering of XB YB and ZB disconcerting, but I wasn't consulted when they were established a few years ago. If you were counting, a yottabyte is about 1.2E24 bytes. That is almost exactly twice Avogadro's Number (6.024E23), which is the number of atoms in one mole of a substance. A mole of carbon weighs 12 grams. The current world data store (Feb 2011) of data held electronically is about 0.8 ZB.

Depending on the model and features of the DVD player, some can play CD-RW and other formats. The printed materials supplied with the DVD player will state what formats the player can read/play.

About 50gb, while a DVD disc can hold 8.5.

As we know, ROM i.e. read only memory can't be altered and comes in in-built form with the computer system. The user can't make any changes. To overcome this problem PROM came into existence. PROM i.e. programmable read only memory allows the user to program their own. Once the chip is prepared again user can't edit it. But also now the technology have been so developed that now we can erase our data and it gave two type of PROM i.e. EEPROM and UVPROM which are erased through high electric pluse and with the help of UV rays respectively. Remember, there is still not the concept of editing the data.

• Disk recording mediums
• Disk recording methods
• Disk drive transports
• Disk drive electronics
• Disk recording specifications

2 gig is well two gig - in what pounds, ounce's?

A gigabyte is 1,000,000,000 bytes. so 2 gigabytes is double that

No. The secondary storage is typically slowerthan primary storage. But the secondary storage has higher capacity than primary storage.

Transfer rate.

Yes...Primary storage or main memory or internal memory is often referred to as memory.

serial because it takes a lot of time to retrieve information