8 U.S. Department of Homeland Security, Office of Inspector General, Federal Protective Service Needs to Improve its. Oversight of the Contract Guard Program, OIG-07-05, October 2006, p. 2. 9 U.S. Department of Homeland Security, U.S. Immigration and Customs Enforcement, Federal Protective Service,
Quick Answer. The types of computer storage devices include floppy disks, USB flash drives, memory cards, memory sticks, tape cassettes, zip cassettes, computer hard drives, CDs and DVDs. Storage devices are used to store data from computers and can be classified as removable or non-removable. Continue Reading.
There are three main categories of storage devices: optical, magnetic and semiconductor. The earliest of these was the magnetic device. Computer systems began with magnetic storage in the form of tapes (yes, just like a cassette or video tape). These graduated to the hard disk drive and then to a floppy disk.