area chart

A type of presentation graphic that emphasizes a change in values by filling in the portion of the graph beneath the line connecting various data points.

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  • areal density

    Also called bit density.The amount of data that can be packed onto a storage medium. Areal densities are generally measured in gigabits per square inch. The term is useful for comparing different types of media, such as magnetic disks and optical disks. Current magnetic and optical disks have areal densities of several gigabits per square […]

  • argument

    In programming, a value that you pass to a routine. For example, if SQRT is a routine that returns the square root of a value, then SQRT(25) would return the value 5. The value 25 is the argument. Argument is often used synonymously with parameter, although parameter can also mean any value that can be […]

  • arithmetic expression

    An expression that represents a numeric value. Other types of expressions can represent character or Boolean values.

  • arity

    In programming it is the number of arguments a function or operator takes. In some languages functions may have variable arity that sometimes means their last or only argument is actually a list of arguments.

  • Array

    In programming, a series of objects all of which are the same size and type. Each object in an array is called an array element. For example, you could have an array of integers or an array of characters or an array of anything that has a defined data type. The important characteristics of an […]

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