A common language for hardware, software, and applications

摘要: Algorithms commonly used in automatic data processing are, when considered terms of the sequence individual physical operations actually executed, incredibly complex. Such algorithms are normally made amenable to human comprehension and analysis by expressing them a more compact abstract form which suppresses systematic detail. This suppression detail occurs several fairly well defined stages, providing hierarchy distinct descriptions algorithm at different levels For example, an expressed FORTRAN language may be transformed compiler machine code description greater level is turn "hardware" computer into detailed executed.