0 the language used to write a computer program before it is turned into machine code (= set of numbers that gives instructions to a computer) -- （電腦的）組合語言
The second segment is dedicated to a study of the basic elements of machine organization, machine language, and assembly language.
Assembly language is a textual representation of instructions.
This data type stands in the same relation to an assembly language that an abstractsyntax tree stands in relation to a programming language.
The big wins are that complexity elsewhere is reduced, and it is easier to map the code to a portable assembly language.
Fortunately for users, intermediate levels of representation, such as machine code, assembly language, and highlevel languages, keep us from toiling with 1s and 0s.
Rather, it generated naive, stack-based typed assembly language, and as a result, the absolute performance relative to an optimizing compiler was disappointing.
Determining exactly why our version is faster is difficult without a detailed timing analysis of the compiler-generated assembly language code.
In contrast, our treatment supports polymorphic stack recursion, and hence procedure calls can be encoded using existing assembly language primitives.
