Can an experienced computer user giveat least one of the components of the system interpretation? Every day we see a keyboard, a mouse, a monitor, but if we ask a question about what a computer device is that allows reading, we can hardly guess right away. Although this mechanism is very well known to us.
The concept of
Similar questions are found on the controlcomputer science. Moreover, even fourth-graders know the answers to them. Of course, not all, but they know. But experienced PC users, who sit at the computer all day, can reinstall the operating system on their own and know how to start the command line, they are unlikely to immediately say what it is. Actually, a disk drive is a computer device that allows reading. Next will be just about him.
What is it?
Возможно, не все читатели знают, что такое drive. Therefore, there will be more general information about this device. We will tell you what it is for and where it is used. Immediately it should be said that the drive has another name - the optical drive. This mechanism is used not only in the PC. It can be found in cars, music players and other devices that use discs. This is a computer device that allows reading. It combines mechanics and electronics, works at the expense of a laser, reads information from optical disks. There is a kind of disk drives that record data with the same laser.
Terminology
It so happened that the optical drive gota lot of names. As it is just not called in the modern world. In addition to official names, such as a drive, it can also be called simply a drive. It is known only that the name itself went from the English Disk Drive.
If we translate primitively, we get the mechanismdriving As is clear from his appointment, he spins the discs. Interestingly, the optical drive is not unique, but the only one that is located in modern computers. And then, if you look at new models of laptops or netbooks, then from there it has already disappeared.
Appearance
Как же выглядит устройство компьютера, allow reading and writing? To say that all drives are the same, it is impossible. It all depends on the scope of their application. It can be as a complete mechanism, which is placed in the computer case. This is a monoblock option for laptops and netbooks. However, there are portable drives.
Interface to connect the drive can beSATA or USB. Previously, in older systems, drives were connected via an IDE loop. These are the most common and well-known connection options. But there were others that few people remember and know. A portable drive is connected via USB. It is not very popular, but it is necessary for those who are accustomed to using discs in work or for watching a movie. In addition, it is convenient that it can be connected to any PC.
На внешний вид влияют и незначительные modifications. For example, more often the drive is represented by a tray that opens with a button. There is a computer device that allows reading and writing information with an open hole. Simply insert the disk there, and the mechanism will automatically “swallow” it.
Types
It is interesting that now there is a bignumber of drive types. They may not even differ in appearance, but work with different formats. So, there is a computer device that allows you to read CDs. Or there are variations for Blu-Ray, DVD, etc.
SD
The CD drive is considered the mostcommon and ordinary. Previously, he was particularly popular. Such a device may be several subspecies. First, a CD-ROM, which can only read information from a disk. Secondly, a CD-RW that can both play back data and write information to a disc.
DVD
This is another kind of disk drives, which at one timeconsidered deficiency. When disks with the latest novelties of the film industry went on sale, this type became especially in demand. This option also has several subspecies. There is a device for reading as well as recording.
The only thing there is a difference.DVD-RW, in addition to reading and writing information from DVDs, can do the same from a CD. Later came another type - DVD-RW DL. This option did everything the same as all the previous ones, but made it possible to work with dual-layer discs, which acquired a large volume. There was also a DVD / CD-RW drive option. Such a computer device that allows reading and writing at the beginning of its development was also popular. Its difference was that CD and DVD could read the drive, but only CD could be recorded.
Blu ray
The optical drive BD-RE is not known to all.He worked with blu-ray. In this case, the disks were just huge - up to 23 GB. Despite the fact that the principle of operation did not differ, there was still a difference. A shorter laser wavelength was used. The blue emission spectrum was also reduced. The very same protective layer of the disk has become larger. This was due to the need for reliable protection of writing and reading.
HD DVD
After there was a combined version that worked with all types of disks. The exception was BD-RE. This option read and wrote all sorts of formats that have acquired a large volume.
Application
At one time, a computer device allowingto carry out reading and writing, it was like air for every programmer. PC 90s could not do without the drive. Now the situation has changed. Of course, with its availability, the system becomes more flexible. But even the operating system was learned to write to a USB flash drive so as not to use the disk.
It was the flash drive that became the “killer” of the opticaldrive. Users prefer a small device that can be placed in a pocket or hanged as a key chain. On the USB flash drive, you can repeatedly record information and delete. To do this, do not need special programs and tools.
"The last nail in the coffin lid" wasappearance of external hard drives. Their volume has become hundreds of times larger, and application is easier. At first, users barely tolerated the loss of the drive from laptops or computers. After learned how to use what was at hand. Nowadays hardly anyone will be puzzled by the absence of an optical drive. Although there are still people who are happy to buy a collector's edition of the game on a disc or a music album in a beautiful package.
