Kunststoffband mit einer magnet. Schicht (z.B. aus Chromdioxid, CrO2, u. Bindelack), das zur Speicherung von Schallimpulsen (Tonband) oder Datenmengen verwendet wird.
Datenträger für Informationen aller Art (Tonband, Videorecorder, Massenspeicher), bestehend aus einer Trägerfolie mit einer magnetisierbaren Schicht (Eisenoxid u.a.), auf der die Daten in Form winziger magnet. Striche gespeichert werden. Das M. wird durch Magnetköpfe 'beschrieben', also in der gewünschten Datenanordnung magnetisiert, und von Leseköpfen 'gelesen', die es nach eingegebenen Kriterien absuchen.
See tape (definition 1).
A long thin plastic strip coated with iron oxide; used to record audio or video signals or to store computer information; SYN. mag tape, tape.
Narrow plastic ribbon coated with an easily magnetizable material on which data can be recorded. It is used in sound recording, audiovisual systems (videotape), and computing. For mass storage on commercial mainframe computers, large reel-to-reel tapes are still used, but cartridges are coming in. Various types of cartridge are now standard on minis and PCs, while audio cassettes are sometimes used with home computers.
Magnetic tape was first used in sound recording 1947, and made overdubbing possible, unlike the direct-to-disc system it replaced. Two-track tape was introduced in the 1950s and four-track in the early 1960s; today, studios use 16-, 24-, or 32-track tape, from which the tracks are mixed down to a stereo master tape.
In computing, magnetic tape was first used to record data and programs in 1951 as part of the UNIVAC 1 system. It was very popular as a storage medium for external memory in the 1950s and 1960s. Since then it has been largely replaced by magnetic discs as a working medium, although tape is still used to make backup copies of important data. Information is recorded on the tape in binary form, with two different strengths of signal representing 1 and 0.