This web page looks at assembly languages in a common method. Specific illustrations of addressing modes and instructions from a variety of processors are used to demonstrate the general nature of assembly language. Dissimilar the other programming languages catalogued here, assembly language is not a single one language, but quite a collection of languages. Every processor family (and at times individual processors within a processor family) has its own assembly language. In dissimilarity to high level languages, data structures and program structures in assembly language are formed by directly implementing them on the fundamental hardware.