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8-inch floppy disk, inserted in drive, (3½-inch floppy diskette, in front, shown for scale) 3½-inch, high-density floppy diskettes with adhesive labels affixed The first commercial floppy disks, developed in the late 1960s, were 8 inches (203.2 mm) in diameter; [4] [5] they became commercially available in 1971 as a component of IBM products and both drives and disks were then sold ...
Figure 1. Disk structures: (A) Track (B) Geometrical sector (C) Track sector (D) Cluster A disk drive track is a circular path on the surface of a disk or diskette on which information is magnetically recorded and from which recorded information is read.
A jukebox is a partially automated music-playing device, usually a coin-operated machine, that plays a patron's selection from self-contained media.The classic jukebox has buttons with letters and numbers on them, which are used to select specific records.
Map of the world showing national-level sales tax / VAT rates as of October 2019. A comparison of tax rates by countries is difficult and somewhat subjective, as tax laws in most countries are extremely complex and the tax burden falls differently on different groups in each country and sub-national unit.
General; Tax avoidance. Repatriation tax avoidance; Tax evasion; Tax resistance; Tax shelter; Debtors' prison; Smuggling; Black market; Unreported employment; Corporate
A 12-row/80-column IBM punched card from the mid-twentieth century. A punched card (also punch card [1] or punched-card [2]) is a piece of card stock that stores digital data using punched holes.
Musical symbols are marks and symbols in musical notation that indicate various aspects of how a piece of music is to be performed. There are symbols to communicate information about many musical elements, including pitch, duration, dynamics, or articulation of musical notes; tempo, metre, form (e.g., whether sections are repeated), and details about specific playing techniques (e.g., which ...
Platinum record for Michael Jackson's Thriller (1982), the best-selling album of all time. This is a list of the world's best-selling albums of recorded music in physical mediums, such as vinyl, audio cassettes or compact discs.