Disc

Disc or disk (computing and American English) may refer to:

Data storage

Everytime You Touch Me

"Everytime You Touch Me" is a song by American electronica musician Moby, released as the third single from his album Everything Is Wrong. The vocals of "Everytime You Touch Me" are performed by Rozz Morehead and Kochie Banton, both of whom appear on Moby's previous single, "Feeling So Real". Before the release of the "Everytime You Touch Me" single, a remix competition was held. The winning remix, made by Jude Sebastian, is featured as track three on the single.

Track listing

Disk storage

Disk storage is a general category of storage mechanisms where data are recorded by various electronic, magnetic, optical, or mechanical changes to a surface layer of one or more rotating disks. A disk drive is a device implementing such a storage mechanism. Notable types are the hard disk drive (HDD) containing a non-removable disk, the floppy disk drive (FDD) and its removable floppy disk, and various optical disc drives and associated optical disc media.

(The spelling disk and disc are used interchangeably except where trademarks preclude one usage, e.g. the Compact Disc logo. The choice of a particular form is frequently historical, as in IBM's usage of the disk form beginning in 1956 with the "IBM 350 disk storage unit").

Background

Audio information was originally recorded by analog methods (see Sound recording and reproduction). Similarly the first video disc used an analog recording method. In the music industry, analog recording has been mostly replaced by digital optical technology where the data are recorded in a digital format with optical information.

Pica

Pica or PICA may refer to:

Biology

Moths

Sea snails

Organizations

Pica (disorder)

Pica (/ˈpaɪkə/ PY-kə) is characterized by an appetite for substances that are largely non-nutritive, such as paper, clay, drywall or paint, metal, chalk, soil, glass, or sand. According to DSM-IV (Diagnostic and Statistical Manual of Mental Disorders, 4th Edition) criteria, for these actions to be considered pica, they must persist for more than one month at an age where eating such objects is considered developmentally inappropriate, not part of culturally sanctioned practice and sufficiently severe to warrant clinical attention. It can lead to intoxication in children, which can result in an impairment in both physical and mental development. In addition, it can also lead to surgical emergencies due to an intestinal obstruction as well as more subtle symptoms such as nutritional deficiencies and parasitosis. Pica has been linked to other mental and emotional disorders. Stressors such as emotional trauma, maternal deprivation, family issues, parental neglect, pregnancy, and a disorganized family structure are strongly linked to pica as a form of comfort.

Pica (typography)

The pica is a typographic unit of measure corresponding to ¹⁄₇₂ of a foot, or ¹⁄₆ of an inch. The pica contains 12 point units of measure.

The pica originated around 1785, when François-Ambroise "L'éclat" Didot (1730–1804) refined the typographic measures system created by Pierre Simon Fournier le Jeune (1712–1768). He replaced the traditional measures of cicéro, Petit-Roman, and Gros-Text with "ten-point", "twelve-point", etc.

To date, in printing these three pica measures are used:

Note that these definitions are different from a typewriter's pica setting, which denotes a type size of ten characters per horizontal inch.

Usually, pica measurements are represented with an upper-case "P" with an upper-right-to-lower-left virgule (slash) starting in the upper right portion of the "P" and ending at the lower left of the upright portion of the "P"; essentially drawing a virgule ( / ) through a "P". (P̸) Likewise, points are represented with number of points before a lower-case "p", for example, 5p represents "5 points", and 6P̸2p represents "6 picas and 2 points", and 1P̸1 represents "13 points", which is converted to a mixed fraction of 1 pica and 1 point.