In this formulation, language variation can be divided into two categories: dialect, for variation according to user, and diatype for variation according to use (e.g. the specialised language of an academic journal). This definition of diatype is very similar to those of register.
North American area code 602 is a state of Arizona telephone area code that covers most of the city of Phoenix.It was one of the original area codes established in October 1947 and had originally covered the entire state of Arizona until 1995, when area code 520 was created as the state's second area code.he area code divider between 602 and 623 was drawn in such a way that in some neighborhoods, homes only a few hundred feet away from each other may have different area codes.
Area Code 602 History: Area code 602 originally covered all of Arizona when it was established in 1947. It was not until 1995 that Arizona experienced sufficient growth in population and telephone use to need an additional area code.It was at that time that area code 602 was split to form area code 520.rea Code 602 was split again in 1999 to form area codes 480 and 623. Counties in Arizona within area code 602 include: Maricopa County. Major cities or places in Arizona within area code 602 include: Area code 602 serves the city of Phoenix, and Laveen.