Abstraction

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    n. A way of removing detail or simplifying a problem or concept. The entire history of computer tools is one of abstraction, of progressively removing detail from the  rogrammer’s
    domain. The earliest developers wrote binary code; assemblers abstracted that tedium from
    them. High-level languages further abstracted the machine implementation details from the programmers. Abstraction is an important part of decomposing problems. Assigning a driver routine to handle a complex hardware device isolates those details from the rest of the system.

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