The cd-rom is an external support for memory, with superior characteristics than floppy disk drives. Cd-rom stands for Compact Disk Read Only Memory and has special facilities, because of the updated fabrication techniques and the way of organizing and data accessing.
The stocking and data accessing is easily obtained using high speeds optical techniques, that’s why the number of mechanical components is little and the reliability is high.
Cd-rom history began in 1980, when this activity domain started to grow as a result of collaboration between Philips and Sony. Before that, each of them tried to provide a solution, but after the collaboration start, they set the standards of cd-rom (in 1982).
Cd-rom and audio CD are similar, only they have to deal some differences. The base is the same, also the reading principle, the physical format and the capacity. The differences are in the field of informational contents, and also in the hardware that reads and writes.
An audio CD can be easily read by the hardware of a CD-ROM.