Topics on Electronics

Discussion in 'Windows Vista General Discussion' started by sona, Dec 8, 2008.

  1. sona

    sona Guest

    Electronics is the field of manipulating electrical currents and
    voltages using passive and active components that are connected
    together to create circuits. Electronic circuits range from a simple
    load resistor that converts a current to a voltage, to computer
    central-processing units (CPUs) that can contain more than a million
    transistors. The following indices and documents provide a basic
    reference for understanding electronic components, circuits, and
    sona, Dec 8, 2008
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  2. sona

    Bill Yanaire Guest

    Domestic sheep (Ovis aries) are quadrupedal, ruminant mammals typically kept
    as livestock. Like all ruminants, sheep are members of the order
    Artiodactyla, the even-toed ungulates. Although the name "sheep" applies to
    many species, in everyday usage it almost always refers to Ovis aries.
    Domestic sheep are the most numerous species in their genus, numbering a
    little over 1 billion, and are most likely descended from the wild mouflon
    of Europe and Asia.

    One of the earliest animals to be domesticated for agricultural purposes,
    sheep are raised for fleece, meat (lamb or mutton) and milk. A sheep's wool
    is the most widely used of any animal, and is usually harvested by shearing.
    Ovine meat is called lamb when from younger animals and mutton when from
    older ones. Sheep continue to be important for wool and meat today, and are
    also occasionally raised for pelts, as dairy animals, or as model organisms
    for science.

    Sheep husbandry is practised throughout the inhabited world, and has been
    fundamental to many civilizations. In the modern era, Australia, New
    Zealand, the southern and central South American nations, and the British
    Isles are most closely associated with sheep production. Sheep-raising has a
    large lexicon of unique terms which vary considerably by region and dialect.
    Use of the word sheep began in Middle English as a derivation of the Old
    English word sceap; it is both the singular and plural name for the animal.
    A group of sheep is called a flock, herd or mob. Adult female sheep are
    referred to as ewes, intact males as rams or tups, castrated males as
    wethers, and younger sheep as lambs. Many other specific terms for the
    various life stages of sheep exist, generally related to lambing, shearing,
    and age.

    Being a key animal in the history of farming, sheep have a deeply entrenched
    place in human culture, and find representation in much modern language and
    symbology. As livestock, sheep are most-often associated with pastoral,
    Arcadian imagery. Sheep figure in many mythologies-such as the Golden
    Fleece-and major religions, especially the Abrahamic traditions. In both
    ancient and modern religious ritual, sheep are used as sacrificial animals.
    In contemporary English language usage, people who are timid, easily led, or
    stupid are often compared to sheep.
    Bill Yanaire, Dec 8, 2008
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