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Second-generation programming language (2GL) is a generational way to categorize assembly languages.〔("Computer Hope, Generation languages" )〕 The term was coined to provide a distinction from higher level third-generation programming languages (3GL) such as COBOL and earlier machine code languages. Second-generation programming languages have the following properties: *The code can be read and written by a programmer. To run on a computer it must be converted into a machine readable form, a process called assembly. *The language is specific to a particular processor family and environment. Second-generation languages are sometimes used in kernels and device drivers (though C is generally employed for this in modern kernels), but more often find use in extremely intensive processing such as games, video editing, graphic manipulation/rendering. One method for creating such code is by allowing a compiler to generate a machine-optimized assembly language version of a particular function. This code is then hand-tuned, gaining both the brute-force insight of the machine optimizing algorithm and the intuitive abilities of the human optimizer. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Second-generation programming language」の詳細全文を読む スポンサード リンク
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