technology

definition of cd-rom

A CD-ROM is an optical technology compact disc used to store and use information on computer media.

A CD-ROM or "Compact Disc - Read Only Memory", which in English means "Compact Disc with Read Only Memory", is a flat plastic disc that houses encoded digital information that has been recorded on it for redistribution and use. free or controlled. To use a CD-ROM, your computer must have a built-in CD reader.

The history of the CD-ROM as we know it today begins in 1985, when the Sony and Philips companies established the Yellow Book or Yellow Book that defines its basic characteristics. This CD-ROM shares the same principles as an audio CD that stores music to be played on specialized equipment.

There are different types of CDs. CD-ROMs are those that carry recorded information from the factory and that can only be used to reproduce that information on multiple computers. For example, these are used for the distribution of information, music, software or applications, games and all kinds of artistic or cultural works. On the other hand, blank CDs allow the user to choose himself what type of information he wants to record on it and, using the appropriate CD burner, he can create his own copies. In these two cases, once the information is recorded on the CD (it is commonly said "burned") it can no longer be deleted or added to it. Finally, a CD-RW is one that allows the free re-writing of the CD, so that it serves as a permanent storage device.

CDs can have different storage capacities or sizes, although the most common is around 600MB. Today, this technology is being overtaken by DVD and USB devices, which can hold much more information that can be constantly exchanged, added, and removed.