A conventional hard disk is magnetic.
A Flash drive uses neither. It uses an integrated circuit like a RAM stick, but much smaller.
It is a flash device, as the name indicates, where the data is stored in discrete transistor cells.
Optical
A compact disc is a type of optical disc. "Optical disc" is an umbrella term for any type of storage media which uses optical technology (as opposed to magnetic) for data storage. This includes but is not limited to DVDs, CDs, H-DVD, blu-ray, laser discs CDRW's, and DVDRW's
two types - magnetic in the form of magnetic tape,magnetic disc and optical in the form of compact disc.
To read CD-ROM's, the technology in a CD-ROM drive is an optical disc drive (ODD). It typically utilizes light to retrieve information on a disc.
"Disc" refers to optical media, such as CDs or DVDs. "Disk" refers to magnetic media, such as hard drives. So the answer depends on which drive you are referring to; most have both an "optical disc drive", and a "hard disk drive".
The optical disc was invented in the 1950's and 1960's. The first patents for this technology were registered to David Paul Gregg in 1961 and 1969. The Music Corporation of America bought the rights to these patents.
optical storage technology
If you burn infected files onto an optical disc then those files remain infected and would remain on the optical disc permanently.
O. C. Oberhauser has written: 'Multimedia information storage and retrieval using optical disc technology' -- subject(s): Information storage and retrieval systems, Information technology, Library science, Optical disks, Optical storage devices, Technological innovations
CD and DVD disks are used by optical disc drives.
I think it is, because its an external memory.
types of optical disc drive are: cd,dvd,blueray,cdr,cdrw,dvdrw,mp3,mp4
optical disls