Advantages And Disadvantages Of Rom Software May Allow

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There are various types of storage devices, different devices are suitable for different tasks.

We will be looking at the main ones which you need to know about.

You may alternatively be provided with a storage device and asked to suggest a situation where it could be used.

They are non-volatile, which means that even when the computer is switched off, the data will still be safe.

Storage media are classified into two categories: Media that can be over-written many times.

We normally refer to the capacity of a storage device in terms of Kilobytes (KB), Megabytes (MB), Gigabytes (GB) - or even Terabytes and beyond.

Cassettes or cartridges - these are fairly small in size but able to hold enough data to back up the data held on a personal computer or a small network.

Because it takes a long time to back up onto magnetic tape, it is usually done at night or over a weekend when the computer network is not in heavy use.

Slow - Because of serial access, it is relatively slow to find the data that you need (however in an exam question, dont just say slow, compare it to a storage device with faster access).

Most standard PCs do not come with the hardware required to use them.

Data stored on a hard disk can be accessed much more quickly than data stored on a floppy disk.

Most hard drives are installed out of the way inside the computer, however you can also purchase external drives that plug into the machine.

Regular head crashes can damage the surface of the disk, leading to loss of data in that sector.

The disk is fixed inside the computer and cannot easily be transferred to another computer.

It used to be one of the most common storage devices for moving data from one PC to another.

However, as file sizes are becoming larger and other, more reliable storage media become increasingly common, people are using floppy disks less frequently.

Private data can be stored securely on a floppy disk so that other users on a network cannot gain access to it.

Can transport viruses from one machine to another Small storage capacity, especially if graphics need to be saved.

Although we tend to talk about CD-ROMs, it is important to note that there are three types of CD-ROMs.

Advantages And Disadvantages Of Rom Software May Allow

Sometimes your CD Burning software may allow you to burn a multi-session disk.

All this is doing is treating the CD-R as a number of smaller areas or sessions.