Other storage devices
Tape
One of the first storage media used with mainframe computers was tape. Tape is a magnetically coated ribbon of plastic capable of storing large amounts of data and information at a low cost. Tape no longer is used as a primary method of storage. Instead, business users utilize tape most often for long-term storage and backup. A tape drive reads and writes data and information on a tape. Although older computers used reel-to-reel tape drives, today’s tape drives use tape cartridges. A tape cartridge is a small, rectangular, plastic housing for tape . Tape cartridges that contain quarter-inch-wide tape are slightly larger than audiocassette tapes. |
Magnetic Stripe Cards and Smart CardsA magnetic stripe card is a credit card, entertainment card, bank card, other
similar card, with a stripe that contains information identifying you and the card Information stored in the stripe includes your name, account number, and the card's expiration date. A magnetic stripe card reader read information stored on the stripe. A smart card, which is similar in size to a credit card or ATM card , stores data on a thin microprocessor embedded in the card. Smart cards contain a processor and have input, process, output, and storage capabilities. |
Microfilm and MicroficheMicrofilm and microfiche store microscopic images of documents on roll or sheet film. Microfilm is a 100- to 215-foot roll of film.
Microfiche is a small sheet of film, usually about 4 3 6 inches. A computer output microfilm recorder is the device that records the images on the film. The stored images are so small that you can read them only with a microfilm or microfiche reader. Microfilm and microfiche use is widespread, with many companies allowing you to search through and view microfilm images online. Libraries use these media to store back issues of newspapers, magazines, and genealogy records. Some large orga nizations use microfilm and micro fiche to archive inactive files. Some banks use them to store transactions and canceled checks. The U.S. Army uses them to store personnel records. |